8020475

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:251

約数の個数: 24

約数和(自身を含む): 10475520

約数和(自身を除く): 2455045

約数列:

[1, 5, 25, 31, 79, 131, 155, 395, 655, 775, 1975, 2449, 3275, 4061, 10349, 12245, 20305, 51745, 61225, 101525, 258725, 320819, 1604095, 8020475]

約数ペア:

[(1, 8020475), (5, 1604095), (25, 320819), (31, 258725), (79, 101525), (131, 61225), (155, 51745), (395, 20305), (655, 12245), (775, 10349), (1975, 4061), (2449, 3275)]