21910161

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4721}}^1$

素因数の和:4761

約数の個数: 32

約数和(自身を含む): 38078208

約数和(自身を除く): 16168047

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 91, 119, 221, 273, 357, 663, 1547, 4641, 4721, 14163, 33047, 61373, 80257, 99141, 184119, 240771, 429611, 561799, 1043341, 1288833, 1685397, 3130023, 7303387, 21910161]

約数ペア:

[(1, 21910161), (3, 7303387), (7, 3130023), (13, 1685397), (17, 1288833), (21, 1043341), (39, 561799), (51, 429611), (91, 240771), (119, 184119), (221, 99141), (273, 80257), (357, 61373), (663, 33047), (1547, 14163), (4641, 4721)]