20213305915

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^2\times {\mathrm{193}}^1\times {\mathrm{599}}^1$

素因数の和:853

約数の個数: 72

約数和(自身を含む): 28516370400

約数和(自身を除く): 8303064485

約数列:

[1, 5, 11, 17, 55, 85, 121, 187, 193, 289, 599, 605, 935, 965, 1445, 2057, 2123, 2995, 3179, 3281, 6589, 10183, 10285, 10615, 15895, 16405, 23353, 32945, 34969, 36091, 50915, 55777, 72479, 112013, 115607, 116765, 173111, 174845, 180455, 278885, 362395, 397001, 560065, 578035, 613547, 865555, 1232143, 1271677, 1904221, 1965319, 1985005, 3067735, 6160715, 6358385, 6749017, 9521105, 9826595, 13988447, 20946431, 21618509, 33410423, 33745085, 69942235, 104732155, 108092545, 167052115, 237803599, 367514653, 1189017995, 1837573265, 4042661183, 20213305915]

約数ペア:

[(1, 20213305915), (5, 4042661183), (11, 1837573265), (17, 1189017995), (55, 367514653), (85, 237803599), (121, 167052115), (187, 108092545), (193, 104732155), (289, 69942235), (599, 33745085), (605, 33410423), (935, 21618509), (965, 20946431), (1445, 13988447), (2057, 9826595), (2123, 9521105), (2995, 6749017), (3179, 6358385), (3281, 6160715), (6589, 3067735), (10183, 1985005), (10285, 1965319), (10615, 1904221), (15895, 1271677), (16405, 1232143), (23353, 865555), (32945, 613547), (34969, 578035), (36091, 560065), (50915, 397001), (55777, 362395), (72479, 278885), (112013, 180455), (115607, 174845), (116765, 173111)]