21551695

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{5519}}^1$

素因数の和:5606

約数の個数: 16

約数和(自身を含む): 28615680

約数和(自身を除く): 7063985

約数列:

[1, 5, 11, 55, 71, 355, 781, 3905, 5519, 27595, 60709, 303545, 391849, 1959245, 4310339, 21551695]

約数ペア:

[(1, 21551695), (5, 4310339), (11, 1959245), (55, 391849), (71, 303545), (355, 60709), (781, 27595), (3905, 5519)]