64625240

素因数分解:

$2^3\times 5^1\times {\mathrm{1615631}}^1$

素因数の和:1615642

約数の個数: 16

約数和(自身を含む): 145406880

約数和(自身を除く): 80781640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1615631, 3231262, 6462524, 8078155, 12925048, 16156310, 32312620, 64625240]

約数ペア:

[(1, 64625240), (2, 32312620), (4, 16156310), (5, 12925048), (8, 8078155), (10, 6462524), (20, 3231262), (40, 1615631)]