20840170

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{160309}}^1$

素因数の和:160329

約数の個数: 16

約数和(自身を含む): 40398120

約数和(自身を除く): 19557950

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 160309, 320618, 801545, 1603090, 2084017, 4168034, 10420085, 20840170]

約数ペア:

[(1, 20840170), (2, 10420085), (5, 4168034), (10, 2084017), (13, 1603090), (26, 801545), (65, 320618), (130, 160309)]