20386971

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{263}}^1$

素因数の和:318

約数の個数: 48

約数和(自身を含む): 34594560

約数和(自身を除く): 14207589

約数列:

[1, 3, 9, 11, 27, 29, 33, 81, 87, 99, 243, 261, 263, 297, 319, 783, 789, 891, 957, 2349, 2367, 2673, 2871, 2893, 7047, 7101, 7627, 8613, 8679, 21303, 22881, 25839, 26037, 63909, 68643, 77517, 78111, 83897, 205929, 234333, 251691, 617787, 702999, 755073, 1853361, 2265219, 6795657, 20386971]

約数ペア:

[(1, 20386971), (3, 6795657), (9, 2265219), (11, 1853361), (27, 755073), (29, 702999), (33, 617787), (81, 251691), (87, 234333), (99, 205929), (243, 83897), (261, 78111), (263, 77517), (297, 68643), (319, 63909), (783, 26037), (789, 25839), (891, 22881), (957, 21303), (2349, 8679), (2367, 8613), (2673, 7627), (2871, 7101), (2893, 7047)]