21411760

素因数分解:

$2^4\times 5^1\times {\mathrm{267647}}^1$

素因数の和:267660

約数の個数: 20

約数和(自身を含む): 49782528

約数和(自身を除く): 28370768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 267647, 535294, 1070588, 1338235, 2141176, 2676470, 4282352, 5352940, 10705880, 21411760]

約数ペア:

[(1, 21411760), (2, 10705880), (4, 5352940), (5, 4282352), (8, 2676470), (10, 2141176), (16, 1338235), (20, 1070588), (40, 535294), (80, 267647)]