81781560

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1$

素因数の和:147

約数の個数: 384

約数和(自身を含む): 339655680

約数和(自身を除く): 257874120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 17, 18, 20, 21, 23, 24, 28, 30, 34, 35, 36, 40, 42, 45, 46, 51, 56, 60, 63, 68, 69, 70, 72, 83, 84, 85, 90, 92, 102, 105, 115, 119, 120, 126, 136, 138, 140, 153, 161, 166, 168, 170, 180, 184, 204, 207, 210, 230, 238, 249, 252, 255, 276, 280, 306, 315, 322, 332, 340, 345, 357, 360, 391, 408, 414, 415, 420, 460, 476, 483, 498, 504, 510, 552, 581, 595, 612, 630, 644, 664, 680, 690, 714, 747, 765, 782, 805, 828, 830, 840, 920, 952, 966, 996, 1020, 1035, 1071, 1162, 1173, 1190, 1224, 1245, 1260, 1288, 1380, 1411, 1428, 1449, 1494, 1530, 1564, 1610, 1656, 1660, 1743, 1785, 1909, 1932, 1955, 1992, 2040, 2070, 2142, 2324, 2346, 2380, 2415, 2490, 2520, 2737, 2760, 2822, 2856, 2898, 2905, 2988, 3060, 3128, 3220, 3320, 3486, 3519, 3570, 3735, 3818, 3864, 3910, 4140, 4233, 4284, 4648, 4692, 4760, 4830, 4980, 5229, 5355, 5474, 5644, 5727, 5796, 5810, 5865, 5976, 6120, 6440, 6972, 7038, 7055, 7140, 7245, 7470, 7636, 7820, 8211, 8280, 8466, 8568, 8715, 9384, 9545, 9660, 9877, 9960, 10458, 10710, 10948, 11288, 11454, 11592, 11620, 11730, 12699, 13363, 13685, 13944, 14076, 14110, 14280, 14490, 14940, 15272, 15640, 16422, 16932, 17181, 17430, 17595, 19090, 19320, 19754, 20916, 21165, 21420, 21896, 22908, 23240, 23460, 24633, 25398, 26145, 26726, 27370, 28152, 28220, 28635, 28980, 29631, 29880, 32453, 32844, 33864, 34362, 34860, 35190, 38180, 39508, 40089, 41055, 41832, 42330, 42840, 45816, 46920, 49266, 49385, 50796, 52290, 53452, 54740, 56440, 57270, 57960, 59262, 63495, 64906, 65688, 66815, 68724, 69720, 70380, 76360, 79016, 80178, 82110, 84660, 85905, 88893, 97359, 98532, 98770, 101592, 104580, 106904, 109480, 114540, 118524, 120267, 123165, 126990, 129812, 133630, 137448, 140760, 148155, 160356, 162265, 164220, 169320, 171810, 177786, 194718, 197064, 197540, 200445, 209160, 227171, 229080, 237048, 240534, 246330, 253980, 259624, 267260, 292077, 296310, 320712, 324530, 328440, 343620, 355572, 389436, 395080, 400890, 444465, 454342, 481068, 486795, 492660, 507960, 534520, 584154, 592620, 601335, 649060, 681513, 687240, 711144, 778872, 801780, 888930, 908684, 962136, 973590, 985320, 1135855, 1168308, 1185240, 1202670, 1298120, 1363026, 1460385, 1603560, 1777860, 1817368, 1947180, 2044539, 2271710, 2336616, 2405340, 2726052, 2920770, 3407565, 3555720, 3894360, 4089078, 4543420, 4810680, 5452104, 5841540, 6815130, 8178156, 9086840, 10222695, 11683080, 13630260, 16356312, 20445390, 27260520, 40890780, 81781560]

約数ペア:

[(1, 81781560), (2, 40890780), (3, 27260520), (4, 20445390), (5, 16356312), (6, 13630260), (7, 11683080), (8, 10222695), (9, 9086840), (10, 8178156), (12, 6815130), (14, 5841540), (15, 5452104), (17, 4810680), (18, 4543420), (20, 4089078), (21, 3894360), (23, 3555720), (24, 3407565), (28, 2920770), (30, 2726052), (34, 2405340), (35, 2336616), (36, 2271710), (40, 2044539), (42, 1947180), (45, 1817368), (46, 1777860), (51, 1603560), (56, 1460385), (60, 1363026), (63, 1298120), (68, 1202670), (69, 1185240), (70, 1168308), (72, 1135855), (83, 985320), (84, 973590), (85, 962136), (90, 908684), (92, 888930), (102, 801780), (105, 778872), (115, 711144), (119, 687240), (120, 681513), (126, 649060), (136, 601335), (138, 592620), (140, 584154), (153, 534520), (161, 507960), (166, 492660), (168, 486795), (170, 481068), (180, 454342), (184, 444465), (204, 400890), (207, 395080), (210, 389436), (230, 355572), (238, 343620), (249, 328440), (252, 324530), (255, 320712), (276, 296310), (280, 292077), (306, 267260), (315, 259624), (322, 253980), (332, 246330), (340, 240534), (345, 237048), (357, 229080), (360, 227171), (391, 209160), (408, 200445), (414, 197540), (415, 197064), (420, 194718), (460, 177786), (476, 171810), (483, 169320), (498, 164220), (504, 162265), (510, 160356), (552, 148155), (581, 140760), (595, 137448), (612, 133630), (630, 129812), (644, 126990), (664, 123165), (680, 120267), (690, 118524), (714, 114540), (747, 109480), (765, 106904), (782, 104580), (805, 101592), (828, 98770), (830, 98532), (840, 97359), (920, 88893), (952, 85905), (966, 84660), (996, 82110), (1020, 80178), (1035, 79016), (1071, 76360), (1162, 70380), (1173, 69720), (1190, 68724), (1224, 66815), (1245, 65688), (1260, 64906), (1288, 63495), (1380, 59262), (1411, 57960), (1428, 57270), (1449, 56440), (1494, 54740), (1530, 53452), (1564, 52290), (1610, 50796), (1656, 49385), (1660, 49266), (1743, 46920), (1785, 45816), (1909, 42840), (1932, 42330), (1955, 41832), (1992, 41055), (2040, 40089), (2070, 39508), (2142, 38180), (2324, 35190), (2346, 34860), (2380, 34362), (2415, 33864), (2490, 32844), (2520, 32453), (2737, 29880), (2760, 29631), (2822, 28980), (2856, 28635), (2898, 28220), (2905, 28152), (2988, 27370), (3060, 26726), (3128, 26145), (3220, 25398), (3320, 24633), (3486, 23460), (3519, 23240), (3570, 22908), (3735, 21896), (3818, 21420), (3864, 21165), (3910, 20916), (4140, 19754), (4233, 19320), (4284, 19090), (4648, 17595), (4692, 17430), (4760, 17181), (4830, 16932), (4980, 16422), (5229, 15640), (5355, 15272), (5474, 14940), (5644, 14490), (5727, 14280), (5796, 14110), (5810, 14076), (5865, 13944), (5976, 13685), (6120, 13363), (6440, 12699), (6972, 11730), (7038, 11620), (7055, 11592), (7140, 11454), (7245, 11288), (7470, 10948), (7636, 10710), (7820, 10458), (8211, 9960), (8280, 9877), (8466, 9660), (8568, 9545), (8715, 9384)]