20338640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{36319}}^1$

素因数の和:36339

約数の個数: 40

約数和(自身を含む): 54044160

約数和(自身を除く): 33705520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 36319, 72638, 145276, 181595, 254233, 290552, 363190, 508466, 581104, 726380, 1016932, 1271165, 1452760, 2033864, 2542330, 2905520, 4067728, 5084660, 10169320, 20338640]

約数ペア:

[(1, 20338640), (2, 10169320), (4, 5084660), (5, 4067728), (7, 2905520), (8, 2542330), (10, 2033864), (14, 1452760), (16, 1271165), (20, 1016932), (28, 726380), (35, 581104), (40, 508466), (56, 363190), (70, 290552), (80, 254233), (112, 181595), (140, 145276), (280, 72638), (560, 36319)]