21906615

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47111}}^1$

素因数の和:47150

約数の個数: 16

約数和(自身を含む): 36182016

約数和(自身を除く): 14275401

約数列:

[1, 3, 5, 15, 31, 93, 155, 465, 47111, 141333, 235555, 706665, 1460441, 4381323, 7302205, 21906615]

約数ペア:

[(1, 21906615), (3, 7302205), (5, 4381323), (15, 1460441), (31, 706665), (93, 235555), (155, 141333), (465, 47111)]