21358315

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{821}}^1$

素因数の和:891

約数の個数: 24

約数和(自身を含む): 28862064

約数和(自身を除く): 7503749

約数列:

[1, 5, 11, 43, 55, 121, 215, 473, 605, 821, 2365, 4105, 5203, 9031, 26015, 35303, 45155, 99341, 176515, 388333, 496705, 1941665, 4271663, 21358315]

約数ペア:

[(1, 21358315), (5, 4271663), (11, 1941665), (43, 496705), (55, 388333), (121, 176515), (215, 99341), (473, 45155), (605, 35303), (821, 26015), (2365, 9031), (4105, 5203)]