685820

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{647}}^1$

素因数の和:709

約数の個数: 24

約数和(自身を含む): 1469664

約数和(自身を除く): 783844

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 647, 1060, 1294, 2588, 3235, 6470, 12940, 34291, 68582, 137164, 171455, 342910, 685820]

約数ペア:

[(1, 685820), (2, 342910), (4, 171455), (5, 137164), (10, 68582), (20, 34291), (53, 12940), (106, 6470), (212, 3235), (265, 2588), (530, 1294), (647, 1060)]