19788119

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{229}}^1$

素因数の和:299

約数の個数: 24

約数和(自身を含む): 23724960

約数和(自身を除く): 3936841

約数列:

[1, 13, 17, 23, 221, 229, 289, 299, 391, 2977, 3757, 3893, 5083, 5267, 6647, 50609, 66181, 68471, 86411, 89539, 860353, 1164007, 1522163, 19788119]

約数ペア:

[(1, 19788119), (13, 1522163), (17, 1164007), (23, 860353), (221, 89539), (229, 86411), (289, 68471), (299, 66181), (391, 50609), (2977, 6647), (3757, 5267), (3893, 5083)]