128539540

素因数分解:

$2^2\times 5^1\times {\mathrm{1217}}^1\times {\mathrm{5281}}^1$

素因数の和:6507

約数の個数: 24

約数和(自身を含む): 270205992

約数和(自身を除く): 141666452

約数列:

[1, 2, 4, 5, 10, 20, 1217, 2434, 4868, 5281, 6085, 10562, 12170, 21124, 24340, 26405, 52810, 105620, 6426977, 12853954, 25707908, 32134885, 64269770, 128539540]

約数ペア:

[(1, 128539540), (2, 64269770), (4, 32134885), (5, 25707908), (10, 12853954), (20, 6426977), (1217, 105620), (2434, 52810), (4868, 26405), (5281, 24340), (6085, 21124), (10562, 12170)]