21757105

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{181}}^1\times {\mathrm{829}}^1$

素因数の和:1044

約数の個数: 16

約数和(自身を含む): 27190800

約数和(自身を除く): 5433695

約数列:

[1, 5, 29, 145, 181, 829, 905, 4145, 5249, 24041, 26245, 120205, 150049, 750245, 4351421, 21757105]

約数ペア:

[(1, 21757105), (5, 4351421), (29, 750245), (145, 150049), (181, 120205), (829, 26245), (905, 24041), (4145, 5249)]