28772055

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{359}}^1$

素因数の和:520

約数の個数: 48

約数和(自身を含む): 54250560

約数和(自身を除く): 25478505

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 137, 195, 359, 411, 585, 685, 1077, 1233, 1781, 1795, 2055, 3231, 4667, 5343, 5385, 6165, 8905, 14001, 16029, 16155, 23335, 26715, 42003, 49183, 70005, 80145, 147549, 210015, 245915, 442647, 639379, 737745, 1918137, 2213235, 3196895, 5754411, 9590685, 28772055]

約数ペア:

[(1, 28772055), (3, 9590685), (5, 5754411), (9, 3196895), (13, 2213235), (15, 1918137), (39, 737745), (45, 639379), (65, 442647), (117, 245915), (137, 210015), (195, 147549), (359, 80145), (411, 70005), (585, 49183), (685, 42003), (1077, 26715), (1233, 23335), (1781, 16155), (1795, 16029), (2055, 14001), (3231, 8905), (4667, 6165), (5343, 5385)]