20786620015

素因数分解:

$5^1\times 7^2\times {\mathrm{83}}^1\times {\mathrm{1022209}}^1$

素因数の和:1022311

約数の個数: 24

約数和(自身を含む): 29366048880

約数和(自身を除く): 8579428865

約数列:

[1, 5, 7, 35, 49, 83, 245, 415, 581, 2905, 4067, 20335, 1022209, 5111045, 7155463, 35777315, 50088241, 84843347, 250441205, 424216735, 593903429, 2969517145, 4157324003, 20786620015]

約数ペア:

[(1, 20786620015), (5, 4157324003), (7, 2969517145), (35, 593903429), (49, 424216735), (83, 250441205), (245, 84843347), (415, 50088241), (581, 35777315), (2905, 7155463), (4067, 5111045), (20335, 1022209)]