68678620

素因数分解:

$2^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{13681}}^1$

素因数の和:13941

約数の個数: 24

約数和(自身を含む): 144810288

約数和(自身を除く): 76131668

約数列:

[1, 2, 4, 5, 10, 20, 251, 502, 1004, 1255, 2510, 5020, 13681, 27362, 54724, 68405, 136810, 273620, 3433931, 6867862, 13735724, 17169655, 34339310, 68678620]

約数ペア:

[(1, 68678620), (2, 34339310), (4, 17169655), (5, 13735724), (10, 6867862), (20, 3433931), (251, 273620), (502, 136810), (1004, 68405), (1255, 54724), (2510, 27362), (5020, 13681)]