28130715

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{193}}^1$

素因数の和:324

約数の個数: 48

約数和(自身を含む): 50843520

約数和(自身を除く): 22712805

約数列:

[1, 3, 5, 9, 15, 41, 45, 79, 123, 193, 205, 237, 369, 395, 579, 615, 711, 965, 1185, 1737, 1845, 2895, 3239, 3555, 7913, 8685, 9717, 15247, 16195, 23739, 29151, 39565, 45741, 48585, 71217, 76235, 118695, 137223, 145755, 228705, 356085, 625127, 686115, 1875381, 3125635, 5626143, 9376905, 28130715]

約数ペア:

[(1, 28130715), (3, 9376905), (5, 5626143), (9, 3125635), (15, 1875381), (41, 686115), (45, 625127), (79, 356085), (123, 228705), (193, 145755), (205, 137223), (237, 118695), (369, 76235), (395, 71217), (579, 48585), (615, 45741), (711, 39565), (965, 29151), (1185, 23739), (1737, 16195), (1845, 15247), (2895, 9717), (3239, 8685), (3555, 7913)]