21281080

素因数分解:

$2^3\times 5^1\times {\mathrm{532027}}^1$

素因数の和:532038

約数の個数: 16

約数和(自身を含む): 47882520

約数和(自身を除く): 26601440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 532027, 1064054, 2128108, 2660135, 4256216, 5320270, 10640540, 21281080]

約数ペア:

[(1, 21281080), (2, 10640540), (4, 5320270), (5, 4256216), (8, 2660135), (10, 2128108), (20, 1064054), (40, 532027)]