18638128

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{10687}}^1$

素因数の和:10804

約数の個数: 20

約数和(自身を含む): 36446080

約数和(自身を除く): 17807952

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 10687, 21374, 42748, 85496, 170992, 1164883, 2329766, 4659532, 9319064, 18638128]

約数ペア:

[(1, 18638128), (2, 9319064), (4, 4659532), (8, 2329766), (16, 1164883), (109, 170992), (218, 85496), (436, 42748), (872, 21374), (1744, 10687)]