19715493

素因数分解:

$3^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{1889}}^1$

素因数の和:1977

約数の個数: 24

約数和(自身を含む): 31026240

約数和(自身を除く): 11310747

約数列:

[1, 3, 7, 21, 49, 71, 147, 213, 497, 1491, 1889, 3479, 5667, 10437, 13223, 39669, 92561, 134119, 277683, 402357, 938833, 2816499, 6571831, 19715493]

約数ペア:

[(1, 19715493), (3, 6571831), (7, 2816499), (21, 938833), (49, 402357), (71, 277683), (147, 134119), (213, 92561), (497, 39669), (1491, 13223), (1889, 10437), (3479, 5667)]