20743857

素因数分解:

$3^4\times {\mathrm{71}}^1\times {\mathrm{3607}}^1$

素因数の和:3690

約数の個数: 20

約数和(自身を含む): 31432896

約数和(自身を除く): 10689039

約数列:

[1, 3, 9, 27, 71, 81, 213, 639, 1917, 3607, 5751, 10821, 32463, 97389, 256097, 292167, 768291, 2304873, 6914619, 20743857]

約数ペア:

[(1, 20743857), (3, 6914619), (9, 2304873), (27, 768291), (71, 292167), (81, 256097), (213, 97389), (639, 32463), (1917, 10821), (3607, 5751)]