3971172020

素因数分解:

$2^2\times 5^1\times {\mathrm{198558601}}^1$

素因数の和:198558610

約数の個数: 12

約数和(自身を含む): 8339461284

約数和(自身を除く): 4368289264

約数列:

[1, 2, 4, 5, 10, 20, 198558601, 397117202, 794234404, 992793005, 1985586010, 3971172020]

約数ペア:

[(1, 3971172020), (2, 1985586010), (4, 992793005), (5, 794234404), (10, 397117202), (20, 198558601)]