21036705520

素因数分解:

$2^4\times 5^1\times {\mathrm{21937}}^1\times {\mathrm{11987}}^1$

素因数の和:33937

約数の個数: 40

約数和(自身を含む): 48916650384

約数和(自身を除く): 27879944864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 11987, 21937, 23974, 43874, 47948, 59935, 87748, 95896, 109685, 119870, 175496, 191792, 219370, 239740, 350992, 438740, 479480, 877480, 958960, 1754960, 262958819, 525917638, 1051835276, 1314794095, 2103670552, 2629588190, 4207341104, 5259176380, 10518352760, 21036705520]

約数ペア:

[(1, 21036705520), (2, 10518352760), (4, 5259176380), (5, 4207341104), (8, 2629588190), (10, 2103670552), (16, 1314794095), (20, 1051835276), (40, 525917638), (80, 262958819), (11987, 1754960), (21937, 958960), (23974, 877480), (43874, 479480), (47948, 438740), (59935, 350992), (87748, 239740), (95896, 219370), (109685, 191792), (119870, 175496)]