64553540

素因数分解:

$2^2\times 5^1\times {\mathrm{1439}}^1\times {\mathrm{2243}}^1$

素因数の和:3691

約数の個数: 24

約数和(自身を含む): 135717120

約数和(自身を除く): 71163580

約数列:

[1, 2, 4, 5, 10, 20, 1439, 2243, 2878, 4486, 5756, 7195, 8972, 11215, 14390, 22430, 28780, 44860, 3227677, 6455354, 12910708, 16138385, 32276770, 64553540]

約数ペア:

[(1, 64553540), (2, 32276770), (4, 16138385), (5, 12910708), (10, 6455354), (20, 3227677), (1439, 44860), (2243, 28780), (2878, 22430), (4486, 14390), (5756, 11215), (7195, 8972)]