12685005

素因数分解:

$3^4\times 5^1\times {\mathrm{31321}}^1$

素因数の和:31338

約数の個数: 20

約数和(自身を含む): 22739772

約数和(自身を除く): 10054767

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 31321, 93963, 156605, 281889, 469815, 845667, 1409445, 2537001, 4228335, 12685005]

約数ペア:

[(1, 12685005), (3, 4228335), (5, 2537001), (9, 1409445), (15, 845667), (27, 469815), (45, 281889), (81, 156605), (135, 93963), (405, 31321)]