664864

素因数分解:

$2^5\times {\mathrm{79}}^1\times {\mathrm{263}}^1$

素因数の和:352

約数の個数: 24

約数和(自身を含む): 1330560

約数和(自身を除く): 665696

約数列:

[1, 2, 4, 8, 16, 32, 79, 158, 263, 316, 526, 632, 1052, 1264, 2104, 2528, 4208, 8416, 20777, 41554, 83108, 166216, 332432, 664864]

約数ペア:

[(1, 664864), (2, 332432), (4, 166216), (8, 83108), (16, 41554), (32, 20777), (79, 8416), (158, 4208), (263, 2528), (316, 2104), (526, 1264), (632, 1052)]