21089295

素因数分解:

$3^3\times 5^1\times {\mathrm{156217}}^1$

素因数の和:156231

約数の個数: 16

約数和(自身を含む): 37492320

約数和(自身を除く): 16403025

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 156217, 468651, 781085, 1405953, 2343255, 4217859, 7029765, 21089295]

約数ペア:

[(1, 21089295), (3, 7029765), (5, 4217859), (9, 2343255), (15, 1405953), (27, 781085), (45, 468651), (135, 156217)]