13018915

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:140

約数の個数: 48

約数和(自身を含む): 20238336

約数和(自身を除く): 7219421

約数列:

[1, 5, 7, 13, 31, 35, 65, 71, 91, 155, 169, 217, 355, 403, 455, 497, 845, 923, 1085, 1183, 2015, 2201, 2485, 2821, 4615, 5239, 5915, 6461, 11005, 11999, 14105, 15407, 26195, 28613, 32305, 36673, 59995, 77035, 83993, 143065, 183365, 200291, 371969, 419965, 1001455, 1859845, 2603783, 13018915]

約数ペア:

[(1, 13018915), (5, 2603783), (7, 1859845), (13, 1001455), (31, 419965), (35, 371969), (65, 200291), (71, 183365), (91, 143065), (155, 83993), (169, 77035), (217, 59995), (355, 36673), (403, 32305), (455, 28613), (497, 26195), (845, 15407), (923, 14105), (1085, 11999), (1183, 11005), (2015, 6461), (2201, 5915), (2485, 5239), (2821, 4615)]