20518810

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157837}}^1$

素因数の和:157857

約数の個数: 16

約数和(自身を含む): 39775176

約数和(自身を除く): 19256366

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 157837, 315674, 789185, 1578370, 2051881, 4103762, 10259405, 20518810]

約数ペア:

[(1, 20518810), (2, 10259405), (5, 4103762), (10, 2051881), (13, 1578370), (26, 789185), (65, 315674), (130, 157837)]