20774817

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{137}}^1$

素因数の和:262

約数の個数: 48

約数和(自身を含む): 36167040

約数和(自身を除く): 15392223

約数列:

[1, 3, 7, 9, 21, 29, 63, 83, 87, 137, 203, 249, 261, 411, 581, 609, 747, 959, 1233, 1743, 1827, 2407, 2877, 3973, 5229, 7221, 8631, 11371, 11919, 16849, 21663, 27811, 34113, 35757, 50547, 79597, 83433, 102339, 151641, 238791, 250299, 329759, 716373, 989277, 2308313, 2967831, 6924939, 20774817]

約数ペア:

[(1, 20774817), (3, 6924939), (7, 2967831), (9, 2308313), (21, 989277), (29, 716373), (63, 329759), (83, 250299), (87, 238791), (137, 151641), (203, 102339), (249, 83433), (261, 79597), (411, 50547), (581, 35757), (609, 34113), (747, 27811), (959, 21663), (1233, 16849), (1743, 11919), (1827, 11371), (2407, 8631), (2877, 7221), (3973, 5229)]