20180668

素因数分解:

$2^2\times {\mathrm{67}}^1\times {\mathrm{257}}^1\times {\mathrm{293}}^1$

素因数の和:621

約数の個数: 24

約数和(自身を含む): 36105552

約数和(自身を除く): 15924884

約数列:

[1, 2, 4, 67, 134, 257, 268, 293, 514, 586, 1028, 1172, 17219, 19631, 34438, 39262, 68876, 75301, 78524, 150602, 301204, 5045167, 10090334, 20180668]

約数ペア:

[(1, 20180668), (2, 10090334), (4, 5045167), (67, 301204), (134, 150602), (257, 78524), (268, 75301), (293, 68876), (514, 39262), (586, 34438), (1028, 19631), (1172, 17219)]