20570039920

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^2\times {\mathrm{389}}^1\times {\mathrm{1831}}^1$

素因数の和:2271

約数の個数: 120

約数和(自身を含む): 50632339680

約数和(自身を除く): 30062299760

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 361, 380, 389, 722, 760, 778, 1444, 1520, 1556, 1805, 1831, 1945, 2888, 3112, 3610, 3662, 3890, 5776, 6224, 7220, 7324, 7391, 7780, 9155, 14440, 14648, 14782, 15560, 18310, 28880, 29296, 29564, 31120, 34789, 36620, 36955, 59128, 69578, 73240, 73910, 118256, 139156, 140429, 146480, 147820, 173945, 278312, 280858, 295640, 347890, 556624, 561716, 591280, 660991, 695780, 702145, 712259, 1123432, 1321982, 1391560, 1404290, 1424518, 2246864, 2643964, 2783120, 2808580, 2849036, 3304955, 3561295, 5287928, 5617160, 5698072, 6609910, 7122590, 10575856, 11234320, 11396144, 13219820, 13532921, 14245180, 26439640, 27065842, 28490360, 52879280, 54131684, 56980720, 67664605, 108263368, 135329210, 216526736, 257125499, 270658420, 514250998, 541316840, 1028501996, 1082633680, 1285627495, 2057003992, 2571254990, 4114007984, 5142509980, 10285019960, 20570039920]

約数ペア:

[(1, 20570039920), (2, 10285019960), (4, 5142509980), (5, 4114007984), (8, 2571254990), (10, 2057003992), (16, 1285627495), (19, 1082633680), (20, 1028501996), (38, 541316840), (40, 514250998), (76, 270658420), (80, 257125499), (95, 216526736), (152, 135329210), (190, 108263368), (304, 67664605), (361, 56980720), (380, 54131684), (389, 52879280), (722, 28490360), (760, 27065842), (778, 26439640), (1444, 14245180), (1520, 13532921), (1556, 13219820), (1805, 11396144), (1831, 11234320), (1945, 10575856), (2888, 7122590), (3112, 6609910), (3610, 5698072), (3662, 5617160), (3890, 5287928), (5776, 3561295), (6224, 3304955), (7220, 2849036), (7324, 2808580), (7391, 2783120), (7780, 2643964), (9155, 2246864), (14440, 1424518), (14648, 1404290), (14782, 1391560), (15560, 1321982), (18310, 1123432), (28880, 712259), (29296, 702145), (29564, 695780), (31120, 660991), (34789, 591280), (36620, 561716), (36955, 556624), (59128, 347890), (69578, 295640), (73240, 280858), (73910, 278312), (118256, 173945), (139156, 147820), (140429, 146480)]