138907993

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{4813}}^1$

素因数の和:4877

約数の個数: 24

約数和(自身を含む): 175614720

約数和(自身を除く): 36706727

約数列:

[1, 7, 19, 31, 49, 133, 217, 589, 931, 1519, 4123, 4813, 28861, 33691, 91447, 149203, 235837, 640129, 1044421, 2834857, 4480903, 7310947, 19843999, 138907993]

約数ペア:

[(1, 138907993), (7, 19843999), (19, 7310947), (31, 4480903), (49, 2834857), (133, 1044421), (217, 640129), (589, 235837), (931, 149203), (1519, 91447), (4123, 33691), (4813, 28861)]