20216547

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{263}}^1$

素因数の和:361

約数の個数: 40

約数和(自身を含む): 33093984

約数和(自身を除く): 12877437

約数列:

[1, 3, 9, 13, 27, 39, 73, 81, 117, 219, 263, 351, 657, 789, 949, 1053, 1971, 2367, 2847, 3419, 5913, 7101, 8541, 10257, 19199, 21303, 25623, 30771, 57597, 76869, 92313, 172791, 249587, 276939, 518373, 748761, 1555119, 2246283, 6738849, 20216547]

約数ペア:

[(1, 20216547), (3, 6738849), (9, 2246283), (13, 1555119), (27, 748761), (39, 518373), (73, 276939), (81, 249587), (117, 172791), (219, 92313), (263, 76869), (351, 57597), (657, 30771), (789, 25623), (949, 21303), (1053, 19199), (1971, 10257), (2367, 8541), (2847, 7101), (3419, 5913)]