1297180

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{821}}^1$

素因数の和:909

約数の個数: 24

約数和(自身を含む): 2761920

約数和(自身を除く): 1464740

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 821, 1580, 1642, 3284, 4105, 8210, 16420, 64859, 129718, 259436, 324295, 648590, 1297180]

約数ペア:

[(1, 1297180), (2, 648590), (4, 324295), (5, 259436), (10, 129718), (20, 64859), (79, 16420), (158, 8210), (316, 4105), (395, 3284), (790, 1642), (821, 1580)]