12915855

素因数分解:

$3^4\times 5^1\times {\mathrm{31891}}^1$

素因数の和:31908

約数の個数: 20

約数和(自身を含む): 23153592

約数和(自身を除く): 10237737

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 31891, 95673, 159455, 287019, 478365, 861057, 1435095, 2583171, 4305285, 12915855]

約数ペア:

[(1, 12915855), (3, 4305285), (5, 2583171), (9, 1435095), (15, 861057), (27, 478365), (45, 287019), (81, 159455), (135, 95673), (405, 31891)]