40691989

素因数分解:

${\mathrm{13}}^2\times {\mathrm{47}}^2\times {\mathrm{109}}^1$

素因数の和:229

約数の個数: 18

約数和(自身を含む): 45433410

約数和(自身を除く): 4741421

約数列:

[1, 13, 47, 109, 169, 611, 1417, 2209, 5123, 7943, 18421, 28717, 66599, 240781, 373321, 865787, 3130153, 40691989]

約数ペア:

[(1, 40691989), (13, 3130153), (47, 865787), (109, 373321), (169, 240781), (611, 66599), (1417, 28717), (2209, 18421), (5123, 7943)]