21855365

素因数分解:

$5^1\times 7^1\times {\mathrm{601}}^1\times {\mathrm{1039}}^1$

素因数の和:1652

約数の個数: 16

約数和(自身を含む): 30051840

約数和(自身を除く): 8196475

約数列:

[1, 5, 7, 35, 601, 1039, 3005, 4207, 5195, 7273, 21035, 36365, 624439, 3122195, 4371073, 21855365]

約数ペア:

[(1, 21855365), (5, 4371073), (7, 3122195), (35, 624439), (601, 36365), (1039, 21035), (3005, 7273), (4207, 5195)]