660656

素因数分解:

$2^4\times {\mathrm{157}}^1\times {\mathrm{263}}^1$

素因数の和:428

約数の個数: 20

約数和(自身を含む): 1293072

約数和(自身を除く): 632416

約数列:

[1, 2, 4, 8, 16, 157, 263, 314, 526, 628, 1052, 1256, 2104, 2512, 4208, 41291, 82582, 165164, 330328, 660656]

約数ペア:

[(1, 660656), (2, 330328), (4, 165164), (8, 82582), (16, 41291), (157, 4208), (263, 2512), (314, 2104), (526, 1256), (628, 1052)]