21994960

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{21149}}^1$

素因数の和:21175

約数の個数: 40

約数和(自身を含む): 55074600

約数和(自身を除く): 33079640

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 21149, 42298, 84596, 105745, 169192, 211490, 274937, 338384, 422980, 549874, 845960, 1099748, 1374685, 1691920, 2199496, 2749370, 4398992, 5498740, 10997480, 21994960]

約数ペア:

[(1, 21994960), (2, 10997480), (4, 5498740), (5, 4398992), (8, 2749370), (10, 2199496), (13, 1691920), (16, 1374685), (20, 1099748), (26, 845960), (40, 549874), (52, 422980), (65, 338384), (80, 274937), (104, 211490), (130, 169192), (208, 105745), (260, 84596), (520, 42298), (1040, 21149)]