12913551

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2887}}^1$

素因数の和:2971

約数の個数: 24

約数和(自身を含む): 21625344

約数和(自身を除く): 8711793

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 2887, 4473, 8661, 20209, 25983, 60627, 181881, 204977, 614931, 1434839, 1844793, 4304517, 12913551]

約数ペア:

[(1, 12913551), (3, 4304517), (7, 1844793), (9, 1434839), (21, 614931), (63, 204977), (71, 181881), (213, 60627), (497, 25983), (639, 20209), (1491, 8661), (2887, 4473)]