18976839

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{239}}^1$

素因数の和:467

約数の個数: 32

約数和(自身を含む): 30720000

約数和(自身を除く): 11743161

約数列:

[1, 3, 7, 19, 21, 57, 133, 199, 239, 399, 597, 717, 1393, 1673, 3781, 4179, 4541, 5019, 11343, 13623, 26467, 31787, 47561, 79401, 95361, 142683, 332927, 903659, 998781, 2710977, 6325613, 18976839]

約数ペア:

[(1, 18976839), (3, 6325613), (7, 2710977), (19, 998781), (21, 903659), (57, 332927), (133, 142683), (199, 95361), (239, 79401), (399, 47561), (597, 31787), (717, 26467), (1393, 13623), (1673, 11343), (3781, 5019), (4179, 4541)]