20685640

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{11003}}^1$

素因数の和:11061

約数の個数: 32

約数和(自身を含む): 47537280

約数和(自身を除く): 26851640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 11003, 22006, 44012, 55015, 88024, 110030, 220060, 440120, 517141, 1034282, 2068564, 2585705, 4137128, 5171410, 10342820, 20685640]

約数ペア:

[(1, 20685640), (2, 10342820), (4, 5171410), (5, 4137128), (8, 2585705), (10, 2068564), (20, 1034282), (40, 517141), (47, 440120), (94, 220060), (188, 110030), (235, 88024), (376, 55015), (470, 44012), (940, 22006), (1880, 11003)]