20653220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{5087}}^1$

素因数の和:5132

約数の個数: 48

約数和(自身を含む): 51287040

約数和(自身を除く): 30633820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 5087, 10174, 20348, 25435, 35609, 50870, 71218, 101740, 142436, 147523, 178045, 295046, 356090, 590092, 712180, 737615, 1032661, 1475230, 2065322, 2950460, 4130644, 5163305, 10326610, 20653220]

約数ペア:

[(1, 20653220), (2, 10326610), (4, 5163305), (5, 4130644), (7, 2950460), (10, 2065322), (14, 1475230), (20, 1032661), (28, 737615), (29, 712180), (35, 590092), (58, 356090), (70, 295046), (116, 178045), (140, 147523), (145, 142436), (203, 101740), (290, 71218), (406, 50870), (580, 35609), (812, 25435), (1015, 20348), (2030, 10174), (4060, 5087)]