20814095

素因数分解:

$5^1\times {\mathrm{109}}^1\times {\mathrm{181}}^1\times {\mathrm{211}}^1$

素因数の和:506

約数の個数: 16

約数和(自身を含む): 25465440

約数和(自身を除く): 4651345

約数列:

[1, 5, 109, 181, 211, 545, 905, 1055, 19729, 22999, 38191, 98645, 114995, 190955, 4162819, 20814095]

約数ペア:

[(1, 20814095), (5, 4162819), (109, 190955), (181, 114995), (211, 98645), (545, 38191), (905, 22999), (1055, 19729)]