1819974580

素因数分解:

$2^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{216149}}^1$

素因数の和:216579

約数の個数: 24

約数和(自身を含む): 3831042600

約数和(自身を除く): 2011068020

約数列:

[1, 2, 4, 5, 10, 20, 421, 842, 1684, 2105, 4210, 8420, 216149, 432298, 864596, 1080745, 2161490, 4322980, 90998729, 181997458, 363994916, 454993645, 909987290, 1819974580]

約数ペア:

[(1, 1819974580), (2, 909987290), (4, 454993645), (5, 363994916), (10, 181997458), (20, 90998729), (421, 4322980), (842, 2161490), (1684, 1080745), (2105, 864596), (4210, 432298), (8420, 216149)]