18507920

素因数分解:

$2^4\times 5^1\times {\mathrm{231349}}^1$

素因数の和:231362

約数の個数: 20

約数和(自身を含む): 43031100

約数和(自身を除く): 24523180

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 231349, 462698, 925396, 1156745, 1850792, 2313490, 3701584, 4626980, 9253960, 18507920]

約数ペア:

[(1, 18507920), (2, 9253960), (4, 4626980), (5, 3701584), (8, 2313490), (10, 1850792), (16, 1156745), (20, 925396), (40, 462698), (80, 231349)]