201815920

素因数分解:

$2^4\times 5^1\times {\mathrm{2522699}}^1$

素因数の和:2522712

約数の個数: 20

約数和(自身を含む): 469222200

約数和(自身を除く): 267406280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2522699, 5045398, 10090796, 12613495, 20181592, 25226990, 40363184, 50453980, 100907960, 201815920]

約数ペア:

[(1, 201815920), (2, 100907960), (4, 50453980), (5, 40363184), (8, 25226990), (10, 20181592), (16, 12613495), (20, 10090796), (40, 5045398), (80, 2522699)]