66409259

素因数分解:

$7^4\times {\mathrm{17}}^1\times {\mathrm{1627}}^1$

素因数の和:1672

約数の個数: 20

約数和(自身を含む): 82080504

約数和(自身を除く): 15671245

約数列:

[1, 7, 17, 49, 119, 343, 833, 1627, 2401, 5831, 11389, 27659, 40817, 79723, 193613, 558061, 1355291, 3906427, 9487037, 66409259]

約数ペア:

[(1, 66409259), (7, 9487037), (17, 3906427), (49, 1355291), (119, 558061), (343, 193613), (833, 79723), (1627, 40817), (2401, 27659), (5831, 11389)]