81163640

素因数分解:

$2^3\times 5^1\times {\mathrm{2029091}}^1$

素因数の和:2029102

約数の個数: 16

約数和(自身を含む): 182618280

約数和(自身を除く): 101454640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2029091, 4058182, 8116364, 10145455, 16232728, 20290910, 40581820, 81163640]

約数ペア:

[(1, 81163640), (2, 40581820), (4, 20290910), (5, 16232728), (8, 10145455), (10, 8116364), (20, 4058182), (40, 2029091)]