20804932540

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{3032789}}^1$

素因数の和:3032819

約数の個数: 48

約数和(自身を含む): 50950872000

約数和(自身を除く): 30145939460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 3430, 6860, 3032789, 6065578, 12131156, 15163945, 21229523, 30327890, 42459046, 60655780, 84918092, 106147615, 148606661, 212295230, 297213322, 424590460, 594426644, 743033305, 1040246627, 1486066610, 2080493254, 2972133220, 4160986508, 5201233135, 10402466270, 20804932540]

約数ペア:

[(1, 20804932540), (2, 10402466270), (4, 5201233135), (5, 4160986508), (7, 2972133220), (10, 2080493254), (14, 1486066610), (20, 1040246627), (28, 743033305), (35, 594426644), (49, 424590460), (70, 297213322), (98, 212295230), (140, 148606661), (196, 106147615), (245, 84918092), (343, 60655780), (490, 42459046), (686, 30327890), (980, 21229523), (1372, 15163945), (1715, 12131156), (3430, 6065578), (6860, 3032789)]