9902439

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{199}}^1$

素因数の和:324

約数の個数: 32

約数和(自身を含む): 15680000

約数和(自身を除く): 5777561

約数列:

[1, 3, 9, 19, 27, 57, 97, 171, 199, 291, 513, 597, 873, 1791, 1843, 2619, 3781, 5373, 5529, 11343, 16587, 19303, 34029, 49761, 57909, 102087, 173727, 366757, 521181, 1100271, 3300813, 9902439]

約数ペア:

[(1, 9902439), (3, 3300813), (9, 1100271), (19, 521181), (27, 366757), (57, 173727), (97, 102087), (171, 57909), (199, 49761), (291, 34029), (513, 19303), (597, 16587), (873, 11343), (1791, 5529), (1843, 5373), (2619, 3781)]