18809721

素因数分解:

$3^2\times 7^1\times {\mathrm{293}}^1\times {\mathrm{1019}}^1$

素因数の和:1325

約数の個数: 24

約数和(自身を含む): 31187520

約数和(自身を除く): 12377799

約数列:

[1, 3, 7, 9, 21, 63, 293, 879, 1019, 2051, 2637, 3057, 6153, 7133, 9171, 18459, 21399, 64197, 298567, 895701, 2089969, 2687103, 6269907, 18809721]

約数ペア:

[(1, 18809721), (3, 6269907), (7, 2687103), (9, 2089969), (21, 895701), (63, 298567), (293, 64197), (879, 21399), (1019, 18459), (2051, 9171), (2637, 7133), (3057, 6153)]