20917323

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{107}}^2$

素因数の和:256

約数の個数: 36

約数和(自身を含む): 36057840

約数和(自身を除く): 15140517

約数列:

[1, 3, 7, 9, 21, 29, 63, 87, 107, 203, 261, 321, 609, 749, 963, 1827, 2247, 3103, 6741, 9309, 11449, 21721, 27927, 34347, 65163, 80143, 103041, 195489, 240429, 332021, 721287, 996063, 2324147, 2988189, 6972441, 20917323]

約数ペア:

[(1, 20917323), (3, 6972441), (7, 2988189), (9, 2324147), (21, 996063), (29, 721287), (63, 332021), (87, 240429), (107, 195489), (203, 103041), (261, 80143), (321, 65163), (609, 34347), (749, 27927), (963, 21721), (1827, 11449), (2247, 9309), (3103, 6741)]