18525820

素因数分解:

$2^2\times 5^1\times {\mathrm{557}}^1\times {\mathrm{1663}}^1$

素因数の和:2229

約数の個数: 24

約数和(自身を含む): 38997504

約数和(自身を除く): 20471684

約数列:

[1, 2, 4, 5, 10, 20, 557, 1114, 1663, 2228, 2785, 3326, 5570, 6652, 8315, 11140, 16630, 33260, 926291, 1852582, 3705164, 4631455, 9262910, 18525820]

約数ペア:

[(1, 18525820), (2, 9262910), (4, 4631455), (5, 3705164), (10, 1852582), (20, 926291), (557, 33260), (1114, 16630), (1663, 11140), (2228, 8315), (2785, 6652), (3326, 5570)]