15911920

素因数分解:

$2^4\times 5^1\times {\mathrm{198899}}^1$

素因数の和:198912

約数の個数: 20

約数和(自身を含む): 36995400

約数和(自身を除く): 21083480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 198899, 397798, 795596, 994495, 1591192, 1988990, 3182384, 3977980, 7955960, 15911920]

約数ペア:

[(1, 15911920), (2, 7955960), (4, 3977980), (5, 3182384), (8, 1988990), (10, 1591192), (16, 994495), (20, 795596), (40, 397798), (80, 198899)]