18713305

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{251}}^1$

素因数の和:337

約数の個数: 32

約数和(自身を含む): 25740288

約数和(自身を除く): 7026983

約数列:

[1, 5, 13, 31, 37, 65, 155, 185, 251, 403, 481, 1147, 1255, 2015, 2405, 3263, 5735, 7781, 9287, 14911, 16315, 38905, 46435, 74555, 101153, 120731, 287897, 505765, 603655, 1439485, 3742661, 18713305]

約数ペア:

[(1, 18713305), (5, 3742661), (13, 1439485), (31, 603655), (37, 505765), (65, 287897), (155, 120731), (185, 101153), (251, 74555), (403, 46435), (481, 38905), (1147, 16315), (1255, 14911), (2015, 9287), (2405, 7781), (3263, 5735)]