20379890

素因数分解:

$2^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{12503}}^1$

素因数の和:12673

約数の個数: 16

約数和(自身を含む): 36911808

約数和(自身を除く): 16531918

約数列:

[1, 2, 5, 10, 163, 326, 815, 1630, 12503, 25006, 62515, 125030, 2037989, 4075978, 10189945, 20379890]

約数ペア:

[(1, 20379890), (2, 10189945), (5, 4075978), (10, 2037989), (163, 125030), (326, 62515), (815, 25006), (1630, 12503)]