20388886

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{431}}^1$

素因数の和:580

約数の個数: 32

約数和(自身を含む): 36495360

約数和(自身を除く): 16106474

約数列:

[1, 2, 7, 14, 31, 62, 109, 217, 218, 431, 434, 763, 862, 1526, 3017, 3379, 6034, 6758, 13361, 23653, 26722, 46979, 47306, 93527, 93958, 187054, 328853, 657706, 1456349, 2912698, 10194443, 20388886]

約数ペア:

[(1, 20388886), (2, 10194443), (7, 2912698), (14, 1456349), (31, 657706), (62, 328853), (109, 187054), (217, 93958), (218, 93527), (431, 47306), (434, 46979), (763, 26722), (862, 23653), (1526, 13361), (3017, 6758), (3379, 6034)]