28882780

素因数分解:

$2^2\times 5^1\times {\mathrm{821}}^1\times {\mathrm{1759}}^1$

素因数の和:2589

約数の個数: 24

約数和(自身を含む): 60762240

約数和(自身を除く): 31879460

約数列:

[1, 2, 4, 5, 10, 20, 821, 1642, 1759, 3284, 3518, 4105, 7036, 8210, 8795, 16420, 17590, 35180, 1444139, 2888278, 5776556, 7220695, 14441390, 28882780]

約数ペア:

[(1, 28882780), (2, 14441390), (4, 7220695), (5, 5776556), (10, 2888278), (20, 1444139), (821, 35180), (1642, 17590), (1759, 16420), (3284, 8795), (3518, 8210), (4105, 7036)]