19810609

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{293}}^1\times {\mathrm{743}}^1$

素因数の和:1056

約数の個数: 16

約数和(自身を含む): 24498432

約数和(自身を除く): 4687823

約数列:

[1, 7, 13, 91, 293, 743, 2051, 3809, 5201, 9659, 26663, 67613, 217699, 1523893, 2830087, 19810609]

約数ペア:

[(1, 19810609), (7, 2830087), (13, 1523893), (91, 217699), (293, 67613), (743, 26663), (2051, 9659), (3809, 5201)]