21690242

素因数分解:

$2^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{9623}}^1$

素因数の和:9662

約数の個数: 24

約数和(自身を含む): 39496896

約数和(自身を除く): 17806654

約数列:

[1, 2, 7, 14, 23, 46, 49, 98, 161, 322, 1127, 2254, 9623, 19246, 67361, 134722, 221329, 442658, 471527, 943054, 1549303, 3098606, 10845121, 21690242]

約数ペア:

[(1, 21690242), (2, 10845121), (7, 3098606), (14, 1549303), (23, 943054), (46, 471527), (49, 442658), (98, 221329), (161, 134722), (322, 67361), (1127, 19246), (2254, 9623)]