21245290

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{193139}}^1$

素因数の和:193157

約数の個数: 16

約数和(自身を含む): 41718240

約数和(自身を除く): 20472950

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 193139, 386278, 965695, 1931390, 2124529, 4249058, 10622645, 21245290]

約数ペア:

[(1, 21245290), (2, 10622645), (5, 4249058), (10, 2124529), (11, 1931390), (22, 965695), (55, 386278), (110, 193139)]