85168840

素因数分解:

$2^3\times 5^1\times {\mathrm{2129221}}^1$

素因数の和:2129232

約数の個数: 16

約数和(自身を含む): 191629980

約数和(自身を除く): 106461140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2129221, 4258442, 8516884, 10646105, 17033768, 21292210, 42584420, 85168840]

約数ペア:

[(1, 85168840), (2, 42584420), (4, 21292210), (5, 17033768), (8, 10646105), (10, 8516884), (20, 4258442), (40, 2129221)]