81237950

素因数分解:

$2^1\times 5^2\times {\mathrm{821}}^1\times {\mathrm{1979}}^1$

素因数の和:2812

約数の個数: 24

約数和(自身を含む): 151363080

約数和(自身を除く): 70125130

約数列:

[1, 2, 5, 10, 25, 50, 821, 1642, 1979, 3958, 4105, 8210, 9895, 19790, 20525, 41050, 49475, 98950, 1624759, 3249518, 8123795, 16247590, 40618975, 81237950]

約数ペア:

[(1, 81237950), (2, 40618975), (5, 16247590), (10, 8123795), (25, 3249518), (50, 1624759), (821, 98950), (1642, 49475), (1979, 41050), (3958, 20525), (4105, 19790), (8210, 9895)]