90143920

素因数分解:

$2^4\times 5^1\times {\mathrm{881}}^1\times {\mathrm{1279}}^1$

素因数の和:2173

約数の個数: 40

約数和(自身を含む): 209986560

約数和(自身を除く): 119842640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 881, 1279, 1762, 2558, 3524, 4405, 5116, 6395, 7048, 8810, 10232, 12790, 14096, 17620, 20464, 25580, 35240, 51160, 70480, 102320, 1126799, 2253598, 4507196, 5633995, 9014392, 11267990, 18028784, 22535980, 45071960, 90143920]

約数ペア:

[(1, 90143920), (2, 45071960), (4, 22535980), (5, 18028784), (8, 11267990), (10, 9014392), (16, 5633995), (20, 4507196), (40, 2253598), (80, 1126799), (881, 102320), (1279, 70480), (1762, 51160), (2558, 35240), (3524, 25580), (4405, 20464), (5116, 17620), (6395, 14096), (7048, 12790), (8810, 10232)]