81401005

素因数分解:

$5^1\times 7^2\times {\mathrm{83}}^1\times {\mathrm{4003}}^1$

素因数の和:4105

約数の個数: 24

約数和(自身を含む): 115026912

約数和(自身を除く): 33625907

約数列:

[1, 5, 7, 35, 49, 83, 245, 415, 581, 2905, 4003, 4067, 20015, 20335, 28021, 140105, 196147, 332249, 980735, 1661245, 2325743, 11628715, 16280201, 81401005]

約数ペア:

[(1, 81401005), (5, 16280201), (7, 11628715), (35, 2325743), (49, 1661245), (83, 980735), (245, 332249), (415, 196147), (581, 140105), (2905, 28021), (4003, 20335), (4067, 20015)]