21407760

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1$

素因数の和:103

約数の個数: 320

約数和(自身を含む): 86780160

約数和(自身を除く): 65372400

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 17, 18, 20, 22, 24, 27, 30, 33, 34, 36, 40, 44, 45, 48, 51, 53, 54, 55, 60, 66, 68, 72, 80, 85, 88, 90, 99, 102, 106, 108, 110, 120, 132, 135, 136, 144, 153, 159, 165, 170, 176, 180, 187, 198, 204, 212, 216, 220, 240, 255, 264, 265, 270, 272, 297, 306, 318, 330, 340, 360, 374, 396, 408, 424, 432, 440, 459, 477, 495, 510, 528, 530, 540, 561, 583, 594, 612, 636, 660, 680, 720, 748, 765, 792, 795, 816, 848, 880, 901, 918, 935, 954, 990, 1020, 1060, 1080, 1122, 1166, 1188, 1224, 1272, 1320, 1360, 1431, 1485, 1496, 1530, 1584, 1590, 1683, 1749, 1802, 1836, 1870, 1908, 1980, 2040, 2120, 2160, 2244, 2295, 2332, 2376, 2385, 2448, 2544, 2640, 2703, 2805, 2862, 2915, 2970, 2992, 3060, 3180, 3366, 3498, 3604, 3672, 3740, 3816, 3960, 4080, 4240, 4488, 4505, 4590, 4664, 4752, 4770, 5049, 5247, 5406, 5610, 5724, 5830, 5940, 6120, 6360, 6732, 6996, 7155, 7208, 7344, 7480, 7632, 7920, 8109, 8415, 8745, 8976, 9010, 9180, 9328, 9540, 9911, 10098, 10494, 10812, 11220, 11448, 11660, 11880, 12240, 12720, 13464, 13515, 13992, 14310, 14416, 14960, 15741, 16218, 16830, 17490, 18020, 18360, 19080, 19822, 20196, 20988, 21624, 22440, 22896, 23320, 23760, 24327, 25245, 26235, 26928, 27030, 27984, 28620, 29733, 31482, 32436, 33660, 34980, 36040, 36720, 38160, 39644, 40392, 40545, 41976, 43248, 44880, 46640, 48654, 49555, 50490, 52470, 54060, 57240, 59466, 62964, 64872, 67320, 69960, 72080, 78705, 79288, 80784, 81090, 83952, 89199, 97308, 99110, 100980, 104940, 108120, 114480, 118932, 121635, 125928, 129744, 134640, 139920, 148665, 157410, 158576, 162180, 178398, 194616, 198220, 201960, 209880, 216240, 237864, 243270, 251856, 267597, 297330, 314820, 324360, 356796, 389232, 396440, 403920, 419760, 445995, 475728, 486540, 535194, 594660, 629640, 648720, 713592, 792880, 891990, 973080, 1070388, 1189320, 1259280, 1337985, 1427184, 1783980, 1946160, 2140776, 2378640, 2675970, 3567960, 4281552, 5351940, 7135920, 10703880, 21407760]

約数ペア:

[(1, 21407760), (2, 10703880), (3, 7135920), (4, 5351940), (5, 4281552), (6, 3567960), (8, 2675970), (9, 2378640), (10, 2140776), (11, 1946160), (12, 1783980), (15, 1427184), (16, 1337985), (17, 1259280), (18, 1189320), (20, 1070388), (22, 973080), (24, 891990), (27, 792880), (30, 713592), (33, 648720), (34, 629640), (36, 594660), (40, 535194), (44, 486540), (45, 475728), (48, 445995), (51, 419760), (53, 403920), (54, 396440), (55, 389232), (60, 356796), (66, 324360), (68, 314820), (72, 297330), (80, 267597), (85, 251856), (88, 243270), (90, 237864), (99, 216240), (102, 209880), (106, 201960), (108, 198220), (110, 194616), (120, 178398), (132, 162180), (135, 158576), (136, 157410), (144, 148665), (153, 139920), (159, 134640), (165, 129744), (170, 125928), (176, 121635), (180, 118932), (187, 114480), (198, 108120), (204, 104940), (212, 100980), (216, 99110), (220, 97308), (240, 89199), (255, 83952), (264, 81090), (265, 80784), (270, 79288), (272, 78705), (297, 72080), (306, 69960), (318, 67320), (330, 64872), (340, 62964), (360, 59466), (374, 57240), (396, 54060), (408, 52470), (424, 50490), (432, 49555), (440, 48654), (459, 46640), (477, 44880), (495, 43248), (510, 41976), (528, 40545), (530, 40392), (540, 39644), (561, 38160), (583, 36720), (594, 36040), (612, 34980), (636, 33660), (660, 32436), (680, 31482), (720, 29733), (748, 28620), (765, 27984), (792, 27030), (795, 26928), (816, 26235), (848, 25245), (880, 24327), (901, 23760), (918, 23320), (935, 22896), (954, 22440), (990, 21624), (1020, 20988), (1060, 20196), (1080, 19822), (1122, 19080), (1166, 18360), (1188, 18020), (1224, 17490), (1272, 16830), (1320, 16218), (1360, 15741), (1431, 14960), (1485, 14416), (1496, 14310), (1530, 13992), (1584, 13515), (1590, 13464), (1683, 12720), (1749, 12240), (1802, 11880), (1836, 11660), (1870, 11448), (1908, 11220), (1980, 10812), (2040, 10494), (2120, 10098), (2160, 9911), (2244, 9540), (2295, 9328), (2332, 9180), (2376, 9010), (2385, 8976), (2448, 8745), (2544, 8415), (2640, 8109), (2703, 7920), (2805, 7632), (2862, 7480), (2915, 7344), (2970, 7208), (2992, 7155), (3060, 6996), (3180, 6732), (3366, 6360), (3498, 6120), (3604, 5940), (3672, 5830), (3740, 5724), (3816, 5610), (3960, 5406), (4080, 5247), (4240, 5049), (4488, 4770), (4505, 4752), (4590, 4664)]