20779941

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{739}}^1$

素因数の和:865

約数の個数: 32

約数和(自身を含む): 34478080

約数和(自身を除く): 13698139

約数列:

[1, 3, 7, 13, 21, 39, 91, 103, 273, 309, 721, 739, 1339, 2163, 2217, 4017, 5173, 9373, 9607, 15519, 28119, 28821, 67249, 76117, 201747, 228351, 532819, 989521, 1598457, 2968563, 6926647, 20779941]

約数ペア:

[(1, 20779941), (3, 6926647), (7, 2968563), (13, 1598457), (21, 989521), (39, 532819), (91, 228351), (103, 201747), (273, 76117), (309, 67249), (721, 28821), (739, 28119), (1339, 15519), (2163, 9607), (2217, 9373), (4017, 5173)]