20520207

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{1889}}^1$

素因数の和:1983

約数の個数: 24

約数和(自身を含む): 31842720

約数和(自身を除く): 11322513

約数列:

[1, 3, 9, 17, 51, 71, 153, 213, 639, 1207, 1889, 3621, 5667, 10863, 17001, 32113, 96339, 134119, 289017, 402357, 1207071, 2280023, 6840069, 20520207]

約数ペア:

[(1, 20520207), (3, 6840069), (9, 2280023), (17, 1207071), (51, 402357), (71, 289017), (153, 134119), (213, 96339), (639, 32113), (1207, 17001), (1889, 10863), (3621, 5667)]