320788

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:247

約数の個数: 24

約数和(自身を含む): 627200

約数和(自身を除く): 306412

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 199, 398, 403, 796, 806, 1612, 2587, 5174, 6169, 10348, 12338, 24676, 80197, 160394, 320788]

約数ペア:

[(1, 320788), (2, 160394), (4, 80197), (13, 24676), (26, 12338), (31, 10348), (52, 6169), (62, 5174), (124, 2587), (199, 1612), (398, 806), (403, 796)]