80605780

素因数分解:

$2^2\times 5^1\times {\mathrm{821}}^1\times {\mathrm{4909}}^1$

素因数の和:5739

約数の個数: 24

約数和(自身を含む): 169512840

約数和(自身を除く): 88907060

約数列:

[1, 2, 4, 5, 10, 20, 821, 1642, 3284, 4105, 4909, 8210, 9818, 16420, 19636, 24545, 49090, 98180, 4030289, 8060578, 16121156, 20151445, 40302890, 80605780]

約数ペア:

[(1, 80605780), (2, 40302890), (4, 20151445), (5, 16121156), (10, 8060578), (20, 4030289), (821, 98180), (1642, 49090), (3284, 24545), (4105, 19636), (4909, 16420), (8210, 9818)]