21275655

素因数分解:

$3^1\times 5^1\times {\mathrm{727}}^1\times {\mathrm{1951}}^1$

素因数の和:2686

約数の個数: 16

約数和(自身を含む): 34105344

約数和(自身を除く): 12829689

約数列:

[1, 3, 5, 15, 727, 1951, 2181, 3635, 5853, 9755, 10905, 29265, 1418377, 4255131, 7091885, 21275655]

約数ペア:

[(1, 21275655), (3, 7091885), (5, 4255131), (15, 1418377), (727, 29265), (1951, 10905), (2181, 9755), (3635, 5853)]