2561871

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{163}}^1$

素因数の和:223

約数の個数: 24

約数和(自身を含む): 3841536

約数和(自身を除く): 1279665

約数列:

[1, 3, 13, 31, 39, 93, 163, 169, 403, 489, 507, 1209, 2119, 5053, 5239, 6357, 15159, 15717, 27547, 65689, 82641, 197067, 853957, 2561871]

約数ペア:

[(1, 2561871), (3, 853957), (13, 197067), (31, 82641), (39, 65689), (93, 27547), (163, 15717), (169, 15159), (403, 6357), (489, 5239), (507, 5053), (1209, 2119)]