8120125

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{263}}^1$

素因数の和:310

約数の個数: 32

約数和(自身を含む): 11531520

約数和(自身を除く): 3411395

約数列:

[1, 5, 13, 19, 25, 65, 95, 125, 247, 263, 325, 475, 1235, 1315, 1625, 2375, 3419, 4997, 6175, 6575, 17095, 24985, 30875, 32875, 64961, 85475, 124925, 324805, 427375, 624625, 1624025, 8120125]

約数ペア:

[(1, 8120125), (5, 1624025), (13, 624625), (19, 427375), (25, 324805), (65, 124925), (95, 85475), (125, 64961), (247, 32875), (263, 30875), (325, 24985), (475, 17095), (1235, 6575), (1315, 6175), (1625, 4997), (2375, 3419)]