21909080

素因数分解:

$2^3\times 5^1\times {\mathrm{547727}}^1$

素因数の和:547738

約数の個数: 16

約数和(自身を含む): 49295520

約数和(自身を除く): 27386440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 547727, 1095454, 2190908, 2738635, 4381816, 5477270, 10954540, 21909080]

約数ペア:

[(1, 21909080), (2, 10954540), (4, 5477270), (5, 4381816), (8, 2738635), (10, 2190908), (20, 1095454), (40, 547727)]