68117180

素因数分解:

$2^2\times 5^1\times {\mathrm{1721}}^1\times {\mathrm{1979}}^1$

素因数の和:3709

約数の個数: 24

約数和(自身を含む): 143201520

約数和(自身を除く): 75084340

約数列:

[1, 2, 4, 5, 10, 20, 1721, 1979, 3442, 3958, 6884, 7916, 8605, 9895, 17210, 19790, 34420, 39580, 3405859, 6811718, 13623436, 17029295, 34058590, 68117180]

約数ペア:

[(1, 68117180), (2, 34058590), (4, 17029295), (5, 13623436), (10, 6811718), (20, 3405859), (1721, 39580), (1979, 34420), (3442, 19790), (3958, 17210), (6884, 9895), (7916, 8605)]