18898071980

素因数分解:

$2^2\times 5^1\times {\mathrm{944903599}}^1$

素因数の和:944903608

約数の個数: 12

約数和(自身を含む): 39685951200

約数和(自身を除く): 20787879220

約数列:

[1, 2, 4, 5, 10, 20, 944903599, 1889807198, 3779614396, 4724517995, 9449035990, 18898071980]

約数ペア:

[(1, 18898071980), (2, 9449035990), (4, 4724517995), (5, 3779614396), (10, 1889807198), (20, 944903599)]