20678872

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{1279}}^1$

素因数の和:1375

約数の個数: 32

約数和(自身を含む): 40550400

約数和(自身を除く): 19871528

約数列:

[1, 2, 4, 8, 43, 47, 86, 94, 172, 188, 344, 376, 1279, 2021, 2558, 4042, 5116, 8084, 10232, 16168, 54997, 60113, 109994, 120226, 219988, 240452, 439976, 480904, 2584859, 5169718, 10339436, 20678872]

約数ペア:

[(1, 20678872), (2, 10339436), (4, 5169718), (8, 2584859), (43, 480904), (47, 439976), (86, 240452), (94, 219988), (172, 120226), (188, 109994), (344, 60113), (376, 54997), (1279, 16168), (2021, 10232), (2558, 8084), (4042, 5116)]