18168125

素因数分解:

$5^4\times {\mathrm{41}}^1\times {\mathrm{709}}^1$

素因数の和:770

約数の個数: 20

約数和(自身を含む): 23289420

約数和(自身を除く): 5121295

約数列:

[1, 5, 25, 41, 125, 205, 625, 709, 1025, 3545, 5125, 17725, 25625, 29069, 88625, 145345, 443125, 726725, 3633625, 18168125]

約数ペア:

[(1, 18168125), (5, 3633625), (25, 726725), (41, 443125), (125, 145345), (205, 88625), (625, 29069), (709, 25625), (1025, 17725), (3545, 5125)]