28142439

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{233}}^1$

素因数の和:431

約数の個数: 32

約数和(自身を含む): 42981120

約数和(自身を除く): 14838681

約数列:

[1, 3, 13, 19, 39, 57, 163, 233, 247, 489, 699, 741, 2119, 3029, 3097, 4427, 6357, 9087, 9291, 13281, 37979, 40261, 57551, 113937, 120783, 172653, 493727, 721601, 1481181, 2164803, 9380813, 28142439]

約数ペア:

[(1, 28142439), (3, 9380813), (13, 2164803), (19, 1481181), (39, 721601), (57, 493727), (163, 172653), (233, 120783), (247, 113937), (489, 57551), (699, 40261), (741, 37979), (2119, 13281), (3029, 9291), (3097, 9087), (4427, 6357)]