21889845

素因数分解:

$3^4\times 5^1\times {\mathrm{54049}}^1$

素因数の和:54066

約数の個数: 20

約数和(自身を含む): 39240300

約数和(自身を除く): 17350455

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 54049, 162147, 270245, 486441, 810735, 1459323, 2432205, 4377969, 7296615, 21889845]

約数ペア:

[(1, 21889845), (3, 7296615), (5, 4377969), (9, 2432205), (15, 1459323), (27, 810735), (45, 486441), (81, 270245), (135, 162147), (405, 54049)]