81120800

素因数分解:

$2^5\times 5^2\times {\mathrm{31}}^1\times {\mathrm{3271}}^1$

素因数の和:3322

約数の個数: 72

約数和(自身を含む): 204486912

約数和(自身を除く): 123366112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 80, 100, 124, 155, 160, 200, 248, 310, 400, 496, 620, 775, 800, 992, 1240, 1550, 2480, 3100, 3271, 4960, 6200, 6542, 12400, 13084, 16355, 24800, 26168, 32710, 52336, 65420, 81775, 101401, 104672, 130840, 163550, 202802, 261680, 327100, 405604, 507005, 523360, 654200, 811208, 1014010, 1308400, 1622416, 2028020, 2535025, 2616800, 3244832, 4056040, 5070050, 8112080, 10140100, 16224160, 20280200, 40560400, 81120800]

約数ペア:

[(1, 81120800), (2, 40560400), (4, 20280200), (5, 16224160), (8, 10140100), (10, 8112080), (16, 5070050), (20, 4056040), (25, 3244832), (31, 2616800), (32, 2535025), (40, 2028020), (50, 1622416), (62, 1308400), (80, 1014010), (100, 811208), (124, 654200), (155, 523360), (160, 507005), (200, 405604), (248, 327100), (310, 261680), (400, 202802), (496, 163550), (620, 130840), (775, 104672), (800, 101401), (992, 81775), (1240, 65420), (1550, 52336), (2480, 32710), (3100, 26168), (3271, 24800), (4960, 16355), (6200, 13084), (6542, 12400)]