20513164

素因数分解:

$2^2\times 7^2\times {\mathrm{104659}}^1$

素因数の和:104677

約数の個数: 18

約数和(自身を含む): 41759340

約数和(自身を除く): 21246176

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 104659, 209318, 418636, 732613, 1465226, 2930452, 5128291, 10256582, 20513164]

約数ペア:

[(1, 20513164), (2, 10256582), (4, 5128291), (7, 2930452), (14, 1465226), (28, 732613), (49, 418636), (98, 209318), (196, 104659)]