28182778

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{199}}^1\times {\mathrm{419}}^1$

素因数の和:646

約数の個数: 24

約数和(自身を含む): 46116000

約数和(自身を除く): 17933222

約数列:

[1, 2, 13, 26, 169, 199, 338, 398, 419, 838, 2587, 5174, 5447, 10894, 33631, 67262, 70811, 83381, 141622, 166762, 1083953, 2167906, 14091389, 28182778]

約数ペア:

[(1, 28182778), (2, 14091389), (13, 2167906), (26, 1083953), (169, 166762), (199, 141622), (338, 83381), (398, 70811), (419, 67262), (838, 33631), (2587, 10894), (5174, 5447)]