81272880

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{457}}^1$

素因数の和:508

約数の個数: 240

約数和(自身を含む): 310084320

約数和(自身を除く): 228811440

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 19, 20, 24, 26, 30, 36, 38, 39, 40, 45, 48, 52, 57, 60, 65, 72, 76, 78, 80, 90, 95, 104, 114, 117, 120, 130, 144, 152, 156, 171, 180, 190, 195, 208, 228, 234, 240, 247, 260, 285, 304, 312, 342, 360, 380, 390, 456, 457, 468, 494, 520, 570, 585, 624, 684, 720, 741, 760, 780, 855, 912, 914, 936, 988, 1040, 1140, 1170, 1235, 1368, 1371, 1482, 1520, 1560, 1710, 1828, 1872, 1976, 2223, 2280, 2285, 2340, 2470, 2736, 2742, 2964, 3120, 3420, 3656, 3705, 3952, 4113, 4446, 4560, 4570, 4680, 4940, 5484, 5928, 5941, 6840, 6855, 7312, 7410, 8226, 8683, 8892, 9140, 9360, 9880, 10968, 11115, 11856, 11882, 13680, 13710, 14820, 16452, 17366, 17784, 17823, 18280, 19760, 20565, 21936, 22230, 23764, 26049, 27420, 29640, 29705, 32904, 34732, 35568, 35646, 36560, 41130, 43415, 44460, 47528, 52098, 53469, 54840, 59280, 59410, 65808, 69464, 71292, 78147, 82260, 86830, 88920, 89115, 95056, 104196, 106938, 109680, 112879, 118820, 130245, 138928, 142584, 156294, 164520, 173660, 177840, 178230, 208392, 213876, 225758, 237640, 260490, 267345, 285168, 312588, 329040, 338637, 347320, 356460, 390735, 416784, 427752, 451516, 475280, 520980, 534690, 564395, 625176, 677274, 694640, 712920, 781470, 855504, 903032, 1015911, 1041960, 1069380, 1128790, 1250352, 1354548, 1425840, 1562940, 1693185, 1806064, 2031822, 2083920, 2138760, 2257580, 2709096, 3125880, 3386370, 4063644, 4277520, 4515160, 5079555, 5418192, 6251760, 6772740, 8127288, 9030320, 10159110, 13545480, 16254576, 20318220, 27090960, 40636440, 81272880]

約数ペア:

[(1, 81272880), (2, 40636440), (3, 27090960), (4, 20318220), (5, 16254576), (6, 13545480), (8, 10159110), (9, 9030320), (10, 8127288), (12, 6772740), (13, 6251760), (15, 5418192), (16, 5079555), (18, 4515160), (19, 4277520), (20, 4063644), (24, 3386370), (26, 3125880), (30, 2709096), (36, 2257580), (38, 2138760), (39, 2083920), (40, 2031822), (45, 1806064), (48, 1693185), (52, 1562940), (57, 1425840), (60, 1354548), (65, 1250352), (72, 1128790), (76, 1069380), (78, 1041960), (80, 1015911), (90, 903032), (95, 855504), (104, 781470), (114, 712920), (117, 694640), (120, 677274), (130, 625176), (144, 564395), (152, 534690), (156, 520980), (171, 475280), (180, 451516), (190, 427752), (195, 416784), (208, 390735), (228, 356460), (234, 347320), (240, 338637), (247, 329040), (260, 312588), (285, 285168), (304, 267345), (312, 260490), (342, 237640), (360, 225758), (380, 213876), (390, 208392), (456, 178230), (457, 177840), (468, 173660), (494, 164520), (520, 156294), (570, 142584), (585, 138928), (624, 130245), (684, 118820), (720, 112879), (741, 109680), (760, 106938), (780, 104196), (855, 95056), (912, 89115), (914, 88920), (936, 86830), (988, 82260), (1040, 78147), (1140, 71292), (1170, 69464), (1235, 65808), (1368, 59410), (1371, 59280), (1482, 54840), (1520, 53469), (1560, 52098), (1710, 47528), (1828, 44460), (1872, 43415), (1976, 41130), (2223, 36560), (2280, 35646), (2285, 35568), (2340, 34732), (2470, 32904), (2736, 29705), (2742, 29640), (2964, 27420), (3120, 26049), (3420, 23764), (3656, 22230), (3705, 21936), (3952, 20565), (4113, 19760), (4446, 18280), (4560, 17823), (4570, 17784), (4680, 17366), (4940, 16452), (5484, 14820), (5928, 13710), (5941, 13680), (6840, 11882), (6855, 11856), (7312, 11115), (7410, 10968), (8226, 9880), (8683, 9360), (8892, 9140)]