21606615

素因数分解:

$3^3\times 5^1\times {\mathrm{160049}}^1$

素因数の和:160063

約数の個数: 16

約数和(自身を含む): 38412000

約数和(自身を除く): 16805385

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 160049, 480147, 800245, 1440441, 2400735, 4321323, 7202205, 21606615]

約数ペア:

[(1, 21606615), (3, 7202205), (5, 4321323), (9, 2400735), (15, 1440441), (27, 800245), (45, 480147), (135, 160049)]