2019921380

素因数分解:

$2^2\times 5^1\times {\mathrm{100996069}}^1$

素因数の和:100996078

約数の個数: 12

約数和(自身を含む): 4241834940

約数和(自身を除く): 2221913560

約数列:

[1, 2, 4, 5, 10, 20, 100996069, 201992138, 403984276, 504980345, 1009960690, 2019921380]

約数ペア:

[(1, 2019921380), (2, 1009960690), (4, 504980345), (5, 403984276), (10, 201992138), (20, 100996069)]