20512142721

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{17136293}}^1$

素因数の和:17136325

約数の個数: 24

約数和(自身を含む): 35643491520

約数和(自身を除く): 15131348799

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 17136293, 51408879, 119954051, 154226637, 325589567, 359862153, 976768701, 1079586459, 2279126969, 2930306103, 6837380907, 20512142721]

約数ペア:

[(1, 20512142721), (3, 6837380907), (7, 2930306103), (9, 2279126969), (19, 1079586459), (21, 976768701), (57, 359862153), (63, 325589567), (133, 154226637), (171, 119954051), (399, 51408879), (1197, 17136293)]