20885584

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{9391}}^1$

素因数の和:9538

約数の個数: 20

約数和(自身を含む): 40761280

約数和(自身を除く): 19875696

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 9391, 18782, 37564, 75128, 150256, 1305349, 2610698, 5221396, 10442792, 20885584]

約数ペア:

[(1, 20885584), (2, 10442792), (4, 5221396), (8, 2610698), (16, 1305349), (139, 150256), (278, 75128), (556, 37564), (1112, 18782), (2224, 9391)]