21605048

素因数分解:

$2^3\times {\mathrm{139}}^1\times {\mathrm{19429}}^1$

素因数の和:19574

約数の個数: 16

約数和(自身を含む): 40803000

約数和(自身を除く): 19197952

約数列:

[1, 2, 4, 8, 139, 278, 556, 1112, 19429, 38858, 77716, 155432, 2700631, 5401262, 10802524, 21605048]

約数ペア:

[(1, 21605048), (2, 10802524), (4, 5401262), (8, 2700631), (139, 155432), (278, 77716), (556, 38858), (1112, 19429)]