20345265

素因数分解:

$3^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:246

約数の個数: 48

約数和(自身を含む): 36691200

約数和(自身を除く): 16345935

約数列:

[1, 3, 5, 9, 15, 45, 59, 79, 97, 177, 237, 291, 295, 395, 485, 531, 711, 873, 885, 1185, 1455, 2655, 3555, 4365, 4661, 5723, 7663, 13983, 17169, 22989, 23305, 28615, 38315, 41949, 51507, 68967, 69915, 85845, 114945, 209745, 257535, 344835, 452117, 1356351, 2260585, 4069053, 6781755, 20345265]

約数ペア:

[(1, 20345265), (3, 6781755), (5, 4069053), (9, 2260585), (15, 1356351), (45, 452117), (59, 344835), (79, 257535), (97, 209745), (177, 114945), (237, 85845), (291, 69915), (295, 68967), (395, 51507), (485, 41949), (531, 38315), (711, 28615), (873, 23305), (885, 22989), (1185, 17169), (1455, 13983), (2655, 7663), (3555, 5723), (4365, 4661)]