640948

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2081}}^1$

素因数の和:2103

約数の個数: 24

約数和(自身を含む): 1399104

約数和(自身を除く): 758156

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 2081, 4162, 8324, 14567, 22891, 29134, 45782, 58268, 91564, 160237, 320474, 640948]

約数ペア:

[(1, 640948), (2, 320474), (4, 160237), (7, 91564), (11, 58268), (14, 45782), (22, 29134), (28, 22891), (44, 14567), (77, 8324), (154, 4162), (308, 2081)]