28130193

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{107}}^2$

素因数の和:243

約数の個数: 48

約数和(自身を含む): 51775360

約数和(自身を除く): 23645167

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 91, 107, 117, 189, 273, 321, 351, 749, 819, 963, 1391, 2247, 2457, 2889, 4173, 6741, 9737, 11449, 12519, 20223, 29211, 34347, 37557, 80143, 87633, 103041, 148837, 240429, 262899, 309123, 446511, 721287, 1041859, 1339533, 2163861, 3125577, 4018599, 9376731, 28130193]

約数ペア:

[(1, 28130193), (3, 9376731), (7, 4018599), (9, 3125577), (13, 2163861), (21, 1339533), (27, 1041859), (39, 721287), (63, 446511), (91, 309123), (107, 262899), (117, 240429), (189, 148837), (273, 103041), (321, 87633), (351, 80143), (749, 37557), (819, 34347), (963, 29211), (1391, 20223), (2247, 12519), (2457, 11449), (2889, 9737), (4173, 6741)]