21401745

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{33181}}^1$

素因数の和:33232

約数の個数: 16

約数和(自身を含む): 35040192

約数和(自身を除く): 13638447

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 33181, 99543, 165905, 497715, 1426783, 4280349, 7133915, 21401745]

約数ペア:

[(1, 21401745), (3, 7133915), (5, 4280349), (15, 1426783), (43, 497715), (129, 165905), (215, 99543), (645, 33181)]