90231640

素因数分解:

$2^3\times 5^1\times {\mathrm{313}}^1\times {\mathrm{7207}}^1$

素因数の和:7531

約数の個数: 32

約数和(自身を含む): 203698080

約数和(自身を除く): 113466440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 313, 626, 1252, 1565, 2504, 3130, 6260, 7207, 12520, 14414, 28828, 36035, 57656, 72070, 144140, 288280, 2255791, 4511582, 9023164, 11278955, 18046328, 22557910, 45115820, 90231640]

約数ペア:

[(1, 90231640), (2, 45115820), (4, 22557910), (5, 18046328), (8, 11278955), (10, 9023164), (20, 4511582), (40, 2255791), (313, 288280), (626, 144140), (1252, 72070), (1565, 57656), (2504, 36035), (3130, 28828), (6260, 14414), (7207, 12520)]