208547721

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{31699}}^1$

素因数の和:31765

約数の個数: 24

約数和(自身を含む): 326383200

約数和(自身を除く): 117835479

約数列:

[1, 3, 9, 17, 43, 51, 129, 153, 387, 731, 2193, 6579, 31699, 95097, 285291, 538883, 1363057, 1616649, 4089171, 4849947, 12267513, 23171969, 69515907, 208547721]

約数ペア:

[(1, 208547721), (3, 69515907), (9, 23171969), (17, 12267513), (43, 4849947), (51, 4089171), (129, 1616649), (153, 1363057), (387, 538883), (731, 285291), (2193, 95097), (6579, 31699)]