20956900

素因数分解:

$2^2\times 5^2\times {\mathrm{209569}}^1$

素因数の和:209583

約数の個数: 18

約数和(自身を含む): 45476690

約数和(自身を除く): 24519790

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 209569, 419138, 838276, 1047845, 2095690, 4191380, 5239225, 10478450, 20956900]

約数ペア:

[(1, 20956900), (2, 10478450), (4, 5239225), (5, 4191380), (10, 2095690), (20, 1047845), (25, 838276), (50, 419138), (100, 209569)]