20003995

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{2441}}^1$

素因数の和:2606

約数の個数: 16

約数和(自身を含む): 26373600

約数和(自身を除く): 6369605

約数列:

[1, 5, 11, 55, 149, 745, 1639, 2441, 8195, 12205, 26851, 134255, 363709, 1818545, 4000799, 20003995]

約数ペア:

[(1, 20003995), (5, 4000799), (11, 1818545), (55, 363709), (149, 134255), (745, 26851), (1639, 12205), (2441, 8195)]