221409855

素因数分解:

$3^4\times 5^1\times {\mathrm{546691}}^1$

素因数の和:546708

約数の個数: 20

約数和(自身を含む): 396898392

約数和(自身を除く): 175488537

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 546691, 1640073, 2733455, 4920219, 8200365, 14760657, 24601095, 44281971, 73803285, 221409855]

約数ペア:

[(1, 221409855), (3, 73803285), (5, 44281971), (9, 24601095), (15, 14760657), (27, 8200365), (45, 4920219), (81, 2733455), (135, 1640073), (405, 546691)]