81900205

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{409}}^1\times {\mathrm{1381}}^1$

素因数の和:1824

約数の個数: 16

約数和(自身を含む): 101991600

約数和(自身を除く): 20091395

約数列:

[1, 5, 29, 145, 409, 1381, 2045, 6905, 11861, 40049, 59305, 200245, 564829, 2824145, 16380041, 81900205]

約数ペア:

[(1, 81900205), (5, 16380041), (29, 2824145), (145, 564829), (409, 200245), (1381, 59305), (2045, 40049), (6905, 11861)]