20827539

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{199}}^1\times {\mathrm{401}}^1$

素因数の和:635

約数の個数: 24

約数和(自身を含む): 31356000

約数和(自身を除く): 10528461

約数列:

[1, 3, 9, 29, 87, 199, 261, 401, 597, 1203, 1791, 3609, 5771, 11629, 17313, 34887, 51939, 79799, 104661, 239397, 718191, 2314171, 6942513, 20827539]

約数ペア:

[(1, 20827539), (3, 6942513), (9, 2314171), (29, 718191), (87, 239397), (199, 104661), (261, 79799), (401, 51939), (597, 34887), (1203, 17313), (1791, 11629), (3609, 5771)]