28685725

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{461}}^1$

素因数の和:621

約数の個数: 24

約数和(自身を含む): 37810080

約数和(自身を除く): 9124355

約数列:

[1, 5, 19, 25, 95, 131, 461, 475, 655, 2305, 2489, 3275, 8759, 11525, 12445, 43795, 60391, 62225, 218975, 301955, 1147429, 1509775, 5737145, 28685725]

約数ペア:

[(1, 28685725), (5, 5737145), (19, 1509775), (25, 1147429), (95, 301955), (131, 218975), (461, 62225), (475, 60391), (655, 43795), (2305, 12445), (2489, 11525), (3275, 8759)]