128307580

素因数分解:

$2^2\times 5^1\times {\mathrm{307}}^1\times {\mathrm{20897}}^1$

素因数の和:21213

約数の個数: 24

約数和(自身を含む): 270336528

約数和(自身を除く): 142028948

約数列:

[1, 2, 4, 5, 10, 20, 307, 614, 1228, 1535, 3070, 6140, 20897, 41794, 83588, 104485, 208970, 417940, 6415379, 12830758, 25661516, 32076895, 64153790, 128307580]

約数ペア:

[(1, 128307580), (2, 64153790), (4, 32076895), (5, 25661516), (10, 12830758), (20, 6415379), (307, 417940), (614, 208970), (1228, 104485), (1535, 83588), (3070, 41794), (6140, 20897)]