21729080

素因数分解:

$2^3\times 5^1\times {\mathrm{543227}}^1$

素因数の和:543238

約数の個数: 16

約数和(自身を含む): 48890520

約数和(自身を除く): 27161440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 543227, 1086454, 2172908, 2716135, 4345816, 5432270, 10864540, 21729080]

約数ペア:

[(1, 21729080), (2, 10864540), (4, 5432270), (5, 4345816), (8, 2716135), (10, 2172908), (20, 1086454), (40, 543227)]