19497665

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{4993}}^1$

素因数の和:5080

約数の個数: 16

約数和(自身を含む): 25888896

約数和(自身を除く): 6391231

約数列:

[1, 5, 11, 55, 71, 355, 781, 3905, 4993, 24965, 54923, 274615, 354503, 1772515, 3899533, 19497665]

約数ペア:

[(1, 19497665), (5, 3899533), (11, 1772515), (55, 354503), (71, 274615), (355, 54923), (781, 24965), (3905, 4993)]