21000377080

素因数分解:

$2^3\times 5^1\times {\mathrm{525009427}}^1$

素因数の和:525009438

約数の個数: 16

約数和(自身を含む): 47250848520

約数和(自身を除く): 26250471440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 525009427, 1050018854, 2100037708, 2625047135, 4200075416, 5250094270, 10500188540, 21000377080]

約数ペア:

[(1, 21000377080), (2, 10500188540), (4, 5250094270), (5, 4200075416), (8, 2625047135), (10, 2100037708), (20, 1050018854), (40, 525009427)]