20884685

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{181}}^1\times {\mathrm{491}}^1$

素因数の和:724

約数の個数: 16

約数和(自身を含む): 25788672

約数和(自身を除く): 4903987

約数列:

[1, 5, 47, 181, 235, 491, 905, 2455, 8507, 23077, 42535, 88871, 115385, 444355, 4176937, 20884685]

約数ペア:

[(1, 20884685), (5, 4176937), (47, 444355), (181, 115385), (235, 88871), (491, 42535), (905, 23077), (2455, 8507)]