21965960

素因数分解:

$2^3\times 5^1\times {\mathrm{549149}}^1$

素因数の和:549160

約数の個数: 16

約数和(自身を含む): 49423500

約数和(自身を除く): 27457540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 549149, 1098298, 2196596, 2745745, 4393192, 5491490, 10982980, 21965960]

約数ペア:

[(1, 21965960), (2, 10982980), (4, 5491490), (5, 4393192), (8, 2745745), (10, 2196596), (20, 1098298), (40, 549149)]