21372440

素因数分解:

$2^3\times 5^1\times {\mathrm{534311}}^1$

素因数の和:534322

約数の個数: 16

約数和(自身を含む): 48088080

約数和(自身を除く): 26715640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 534311, 1068622, 2137244, 2671555, 4274488, 5343110, 10686220, 21372440]

約数ペア:

[(1, 21372440), (2, 10686220), (4, 5343110), (5, 4274488), (8, 2671555), (10, 2137244), (20, 1068622), (40, 534311)]