21705902

素因数分解:

$2^1\times {\mathrm{37}}^1\times {\mathrm{521}}^1\times {\mathrm{563}}^1$

素因数の和:1123

約数の個数: 16

約数和(自身を含む): 33562512

約数和(自身を除く): 11856610

約数列:

[1, 2, 37, 74, 521, 563, 1042, 1126, 19277, 20831, 38554, 41662, 293323, 586646, 10852951, 21705902]

約数ペア:

[(1, 21705902), (2, 10852951), (37, 586646), (74, 293323), (521, 41662), (563, 38554), (1042, 20831), (1126, 19277)]