20286580

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{10457}}^1$

素因数の和:10563

約数の個数: 24

約数和(自身を含む): 43045128

約数和(自身を除く): 22758548

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 10457, 20914, 41828, 52285, 104570, 209140, 1014329, 2028658, 4057316, 5071645, 10143290, 20286580]

約数ペア:

[(1, 20286580), (2, 10143290), (4, 5071645), (5, 4057316), (10, 2028658), (20, 1014329), (97, 209140), (194, 104570), (388, 52285), (485, 41828), (970, 20914), (1940, 10457)]