1277978

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{199}}^1$

素因数の和:246

約数の個数: 24

約数和(自身を含む): 2196000

約数和(自身を除く): 918022

約数列:

[1, 2, 13, 19, 26, 38, 169, 199, 247, 338, 398, 494, 2587, 3211, 3781, 5174, 6422, 7562, 33631, 49153, 67262, 98306, 638989, 1277978]

約数ペア:

[(1, 1277978), (2, 638989), (13, 98306), (19, 67262), (26, 49153), (38, 33631), (169, 7562), (199, 6422), (247, 5174), (338, 3781), (398, 3211), (494, 2587)]