21254013

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{673}}^1$

素因数の和:730

約数の個数: 36

約数和(自身を含む): 34960380

約数和(自身を除く): 13706367

約数列:

[1, 3, 9, 11, 29, 33, 87, 99, 121, 261, 319, 363, 673, 957, 1089, 2019, 2871, 3509, 6057, 7403, 10527, 19517, 22209, 31581, 58551, 66627, 81433, 175653, 214687, 244299, 644061, 732897, 1932183, 2361557, 7084671, 21254013]

約数ペア:

[(1, 21254013), (3, 7084671), (9, 2361557), (11, 1932183), (29, 732897), (33, 644061), (87, 244299), (99, 214687), (121, 175653), (261, 81433), (319, 66627), (363, 58551), (673, 31581), (957, 22209), (1089, 19517), (2019, 10527), (2871, 7403), (3509, 6057)]