20159991

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{461}}^1$

素因数の和:623

約数の個数: 24

約数和(自身を含む): 30126096

約数和(自身を除く): 9966105

約数列:

[1, 3, 9, 43, 113, 129, 339, 387, 461, 1017, 1383, 4149, 4859, 14577, 19823, 43731, 52093, 59469, 156279, 178407, 468837, 2239999, 6719997, 20159991]

約数ペア:

[(1, 20159991), (3, 6719997), (9, 2239999), (43, 468837), (113, 178407), (129, 156279), (339, 59469), (387, 52093), (461, 43731), (1017, 19823), (1383, 14577), (4149, 4859)]