20318990

素因数分解:

$2^1\times 5^1\times {\mathrm{569}}^1\times {\mathrm{3571}}^1$

素因数の和:4147

約数の個数: 16

約数和(自身を含む): 36648720

約数和(自身を除く): 16329730

約数列:

[1, 2, 5, 10, 569, 1138, 2845, 3571, 5690, 7142, 17855, 35710, 2031899, 4063798, 10159495, 20318990]

約数ペア:

[(1, 20318990), (2, 10159495), (5, 4063798), (10, 2031899), (569, 35710), (1138, 17855), (2845, 7142), (3571, 5690)]