813220

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{557}}^1$

素因数の和:639

約数の個数: 24

約数和(自身を含む): 1734264

約数和(自身を除く): 921044

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 557, 730, 1114, 1460, 2228, 2785, 5570, 11140, 40661, 81322, 162644, 203305, 406610, 813220]

約数ペア:

[(1, 813220), (2, 406610), (4, 203305), (5, 162644), (10, 81322), (20, 40661), (73, 11140), (146, 5570), (292, 2785), (365, 2228), (557, 1460), (730, 1114)]