405655220

素因数分解:

$2^2\times 5^1\times {\mathrm{1993}}^1\times {\mathrm{10177}}^1$

素因数の和:12179

約数の個数: 24

約数和(自身を含む): 852387144

約数和(自身を除く): 446731924

約数列:

[1, 2, 4, 5, 10, 20, 1993, 3986, 7972, 9965, 10177, 19930, 20354, 39860, 40708, 50885, 101770, 203540, 20282761, 40565522, 81131044, 101413805, 202827610, 405655220]

約数ペア:

[(1, 405655220), (2, 202827610), (4, 101413805), (5, 81131044), (10, 40565522), (20, 20282761), (1993, 203540), (3986, 101770), (7972, 50885), (9965, 40708), (10177, 39860), (19930, 20354)]