20685584

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{409}}^1$

素因数の和:555

約数の個数: 40

約数和(自身を含む): 41943000

約数和(自身を除く): 21257416

約数列:

[1, 2, 4, 8, 16, 29, 58, 109, 116, 218, 232, 409, 436, 464, 818, 872, 1636, 1744, 3161, 3272, 6322, 6544, 11861, 12644, 23722, 25288, 44581, 47444, 50576, 89162, 94888, 178324, 189776, 356648, 713296, 1292849, 2585698, 5171396, 10342792, 20685584]

約数ペア:

[(1, 20685584), (2, 10342792), (4, 5171396), (8, 2585698), (16, 1292849), (29, 713296), (58, 356648), (109, 189776), (116, 178324), (218, 94888), (232, 89162), (409, 50576), (436, 47444), (464, 44581), (818, 25288), (872, 23722), (1636, 12644), (1744, 11861), (3161, 6544), (3272, 6322)]