21140792

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{359}}^1\times {\mathrm{433}}^1$

素因数の和:815

約数の個数: 32

約数和(自身を含む): 42184800

約数和(自身を除く): 21044008

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 359, 433, 718, 866, 1436, 1732, 2872, 3464, 6103, 7361, 12206, 14722, 24412, 29444, 48824, 58888, 155447, 310894, 621788, 1243576, 2642599, 5285198, 10570396, 21140792]

約数ペア:

[(1, 21140792), (2, 10570396), (4, 5285198), (8, 2642599), (17, 1243576), (34, 621788), (68, 310894), (136, 155447), (359, 58888), (433, 48824), (718, 29444), (866, 24412), (1436, 14722), (1732, 12206), (2872, 7361), (3464, 6103)]