21957080

素因数分解:

$2^3\times 5^1\times {\mathrm{548927}}^1$

素因数の和:548938

約数の個数: 16

約数和(自身を含む): 49403520

約数和(自身を除く): 27446440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 548927, 1097854, 2195708, 2744635, 4391416, 5489270, 10978540, 21957080]

約数ペア:

[(1, 21957080), (2, 10978540), (4, 5489270), (5, 4391416), (8, 2744635), (10, 2195708), (20, 1097854), (40, 548927)]