1397431

素因数分解:

$7^2\times {\mathrm{19}}^2\times {\mathrm{79}}^1$

素因数の和:131

約数の個数: 18

約数和(自身を含む): 1737360

約数和(自身を除く): 339929

約数列:

[1, 7, 19, 49, 79, 133, 361, 553, 931, 1501, 2527, 3871, 10507, 17689, 28519, 73549, 199633, 1397431]

約数ペア:

[(1, 1397431), (7, 199633), (19, 73549), (49, 28519), (79, 17689), (133, 10507), (361, 3871), (553, 2527), (931, 1501)]