19937071

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{787}}^1$

素因数の和:859

約数の個数: 24

約数和(自身を含む): 25871616

約数和(自身を除く): 5934545

約数列:

[1, 7, 11, 47, 49, 77, 329, 517, 539, 787, 2303, 3619, 5509, 8657, 25333, 36989, 38563, 60599, 258923, 406879, 424193, 1812461, 2848153, 19937071]

約数ペア:

[(1, 19937071), (7, 2848153), (11, 1812461), (47, 424193), (49, 406879), (77, 258923), (329, 60599), (517, 38563), (539, 36989), (787, 25333), (2303, 8657), (3619, 5509)]