20481620

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53899}}^1$

素因数の和:53927

約数の個数: 24

約数和(自身を含む): 45276000

約数和(自身を除く): 24794380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 53899, 107798, 215596, 269495, 538990, 1024081, 1077980, 2048162, 4096324, 5120405, 10240810, 20481620]

約数ペア:

[(1, 20481620), (2, 10240810), (4, 5120405), (5, 4096324), (10, 2048162), (19, 1077980), (20, 1024081), (38, 538990), (76, 269495), (95, 215596), (190, 107798), (380, 53899)]