71757775

素因数分解:

$5^2\times {\mathrm{19}}^2\times {\mathrm{7951}}^1$

素因数の和:7999

約数の個数: 18

約数和(自身を含む): 93921072

約数和(自身を除く): 22163297

約数列:

[1, 5, 19, 25, 95, 361, 475, 1805, 7951, 9025, 39755, 151069, 198775, 755345, 2870311, 3776725, 14351555, 71757775]

約数ペア:

[(1, 71757775), (5, 14351555), (19, 3776725), (25, 2870311), (95, 755345), (361, 198775), (475, 151069), (1805, 39755), (7951, 9025)]