64402720

素因数分解:

$2^5\times 5^1\times {\mathrm{402517}}^1$

素因数の和:402532

約数の個数: 24

約数和(自身を含む): 152151804

約数和(自身を除く): 87749084

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 402517, 805034, 1610068, 2012585, 3220136, 4025170, 6440272, 8050340, 12880544, 16100680, 32201360, 64402720]

約数ペア:

[(1, 64402720), (2, 32201360), (4, 16100680), (5, 12880544), (8, 8050340), (10, 6440272), (16, 4025170), (20, 3220136), (32, 2012585), (40, 1610068), (80, 805034), (160, 402517)]