20267920

素因数分解:

$2^4\times 5^1\times {\mathrm{253349}}^1$

素因数の和:253362

約数の個数: 20

約数和(自身を含む): 47123100

約数和(自身を除く): 26855180

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 253349, 506698, 1013396, 1266745, 2026792, 2533490, 4053584, 5066980, 10133960, 20267920]

約数ペア:

[(1, 20267920), (2, 10133960), (4, 5066980), (5, 4053584), (8, 2533490), (10, 2026792), (16, 1266745), (20, 1013396), (40, 506698), (80, 253349)]