20118605

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{821}}^1$

素因数の和:881

約数の個数: 24

約数和(自身を含む): 27076680

約数和(自身を除く): 6958075

約数列:

[1, 5, 13, 29, 65, 145, 169, 377, 821, 845, 1885, 4105, 4901, 10673, 23809, 24505, 53365, 119045, 138749, 309517, 693745, 1547585, 4023721, 20118605]

約数ペア:

[(1, 20118605), (5, 4023721), (13, 1547585), (29, 693745), (65, 309517), (145, 138749), (169, 119045), (377, 53365), (821, 24505), (845, 23809), (1885, 10673), (4105, 4901)]