21485845

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{163}}^1\times {\mathrm{643}}^1$

素因数の和:852

約数の個数: 16

約数和(自身を含む): 26615232

約数和(自身を除く): 5129387

約数列:

[1, 5, 41, 163, 205, 643, 815, 3215, 6683, 26363, 33415, 104809, 131815, 524045, 4297169, 21485845]

約数ペア:

[(1, 21485845), (5, 4297169), (41, 524045), (163, 131815), (205, 104809), (643, 33415), (815, 26363), (3215, 6683)]