21901396

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{3581}}^1$

素因数の和:3735

約数の個数: 24

約数和(自身を含む): 42124320

約数和(自身を除く): 20222924

約数列:

[1, 2, 4, 11, 22, 44, 139, 278, 556, 1529, 3058, 3581, 6116, 7162, 14324, 39391, 78782, 157564, 497759, 995518, 1991036, 5475349, 10950698, 21901396]

約数ペア:

[(1, 21901396), (2, 10950698), (4, 5475349), (11, 1991036), (22, 995518), (44, 497759), (139, 157564), (278, 78782), (556, 39391), (1529, 14324), (3058, 7162), (3581, 6116)]