81857854

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{199}}^1\times {\mathrm{1217}}^1$

素因数の和:1444

約数の個数: 24

約数和(自身を含む): 133736400

約数和(自身を除く): 51878546

約数列:

[1, 2, 13, 26, 169, 199, 338, 398, 1217, 2434, 2587, 5174, 15821, 31642, 33631, 67262, 205673, 242183, 411346, 484366, 3148379, 6296758, 40928927, 81857854]

約数ペア:

[(1, 81857854), (2, 40928927), (13, 6296758), (26, 3148379), (169, 484366), (199, 411346), (338, 242183), (398, 205673), (1217, 67262), (2434, 33631), (2587, 31642), (5174, 15821)]