640946404

素因数分解:

$2^2\times 7^1\times {\mathrm{101}}^1\times {\mathrm{226643}}^1$

素因数の和:226755

約数の個数: 24

約数和(自身を含む): 1294590528

約数和(自身を除く): 653644124

約数列:

[1, 2, 4, 7, 14, 28, 101, 202, 404, 707, 1414, 2828, 226643, 453286, 906572, 1586501, 3173002, 6346004, 22890943, 45781886, 91563772, 160236601, 320473202, 640946404]

約数ペア:

[(1, 640946404), (2, 320473202), (4, 160236601), (7, 91563772), (14, 45781886), (28, 22890943), (101, 6346004), (202, 3173002), (404, 1586501), (707, 906572), (1414, 453286), (2828, 226643)]