161819515

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{13313}}^1$

素因数の和:13359

約数の個数: 32

約数和(自身を含む): 241569216

約数和(自身を除く): 79749701

約数列:

[1, 5, 11, 13, 17, 55, 65, 85, 143, 187, 221, 715, 935, 1105, 2431, 12155, 13313, 66565, 146443, 173069, 226321, 732215, 865345, 1131605, 1903759, 2489531, 2942173, 9518795, 12447655, 14710865, 32363903, 161819515]

約数ペア:

[(1, 161819515), (5, 32363903), (11, 14710865), (13, 12447655), (17, 9518795), (55, 2942173), (65, 2489531), (85, 1903759), (143, 1131605), (187, 865345), (221, 732215), (715, 226321), (935, 173069), (1105, 146443), (2431, 66565), (12155, 13313)]