31393271

素因数分解:

$7^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{223}}^1$

素因数の和:280

約数の個数: 36

約数和(自身を含む): 42057792

約数和(自身を除く): 10664521

約数列:

[1, 7, 13, 17, 49, 91, 119, 169, 221, 223, 637, 833, 1183, 1547, 1561, 2873, 2899, 3791, 8281, 10829, 10927, 20111, 20293, 26537, 37687, 49283, 140777, 142051, 185759, 263809, 344981, 640679, 1846663, 2414867, 4484753, 31393271]

約数ペア:

[(1, 31393271), (7, 4484753), (13, 2414867), (17, 1846663), (49, 640679), (91, 344981), (119, 263809), (169, 185759), (221, 142051), (223, 140777), (637, 49283), (833, 37687), (1183, 26537), (1547, 20293), (1561, 20111), (2873, 10927), (2899, 10829), (3791, 8281)]