20395417

素因数分解:

$7^2\times {\mathrm{19}}^2\times {\mathrm{1153}}^1$

素因数の和:1205

約数の個数: 18

約数和(自身を含む): 25061418

約数和(自身を除く): 4666001

約数列:

[1, 7, 19, 49, 133, 361, 931, 1153, 2527, 8071, 17689, 21907, 56497, 153349, 416233, 1073443, 2913631, 20395417]

約数ペア:

[(1, 20395417), (7, 2913631), (19, 1073443), (49, 416233), (133, 153349), (361, 56497), (931, 21907), (1153, 17689), (2527, 8071)]