81123055

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{379}}^1$

素因数の和:523

約数の個数: 32

約数和(自身を含む): 109166400

約数和(自身を除く): 28043345

約数列:

[1, 5, 13, 37, 65, 89, 185, 379, 445, 481, 1157, 1895, 2405, 3293, 4927, 5785, 14023, 16465, 24635, 33731, 42809, 70115, 168655, 182299, 214045, 438503, 911495, 1248047, 2192515, 6240235, 16224611, 81123055]

約数ペア:

[(1, 81123055), (5, 16224611), (13, 6240235), (37, 2192515), (65, 1248047), (89, 911495), (185, 438503), (379, 214045), (445, 182299), (481, 168655), (1157, 70115), (1895, 42809), (2405, 33731), (3293, 24635), (4927, 16465), (5785, 14023)]