20120113

素因数分解:

${\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{643}}^1$

素因数の和:768

約数の個数: 16

約数和(自身を含む): 22720320

約数和(自身を除く): 2600207

約数列:

[1, 13, 29, 83, 377, 643, 1079, 2407, 8359, 18647, 31291, 53369, 242411, 693797, 1547701, 20120113]

約数ペア:

[(1, 20120113), (13, 1547701), (29, 693797), (83, 242411), (377, 53369), (643, 31291), (1079, 18647), (2407, 8359)]