3217640

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{313}}^1$

素因数の和:581

約数の個数: 32

約数和(自身を含む): 7291080

約数和(自身を除く): 4073440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 313, 514, 626, 1028, 1252, 1285, 1565, 2056, 2504, 2570, 3130, 5140, 6260, 10280, 12520, 80441, 160882, 321764, 402205, 643528, 804410, 1608820, 3217640]

約数ペア:

[(1, 3217640), (2, 1608820), (4, 804410), (5, 643528), (8, 402205), (10, 321764), (20, 160882), (40, 80441), (257, 12520), (313, 10280), (514, 6260), (626, 5140), (1028, 3130), (1252, 2570), (1285, 2504), (1565, 2056)]