20716983

素因数分解:

$3^2\times 7^1\times {\mathrm{499}}^1\times {\mathrm{659}}^1$

素因数の和:1171

約数の個数: 24

約数和(自身を含む): 34320000

約数和(自身を除く): 13603017

約数列:

[1, 3, 7, 9, 21, 63, 499, 659, 1497, 1977, 3493, 4491, 4613, 5931, 10479, 13839, 31437, 41517, 328841, 986523, 2301887, 2959569, 6905661, 20716983]

約数ペア:

[(1, 20716983), (3, 6905661), (7, 2959569), (9, 2301887), (21, 986523), (63, 328841), (499, 41517), (659, 31437), (1497, 13839), (1977, 10479), (3493, 5931), (4491, 4613)]