28350621

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{37}}^2\times {\mathrm{59}}^1$

素因数の和:155

約数の個数: 48

約数和(自身を含む): 47275200

約数和(自身を除く): 18924579

約数列:

[1, 3, 9, 13, 27, 37, 39, 59, 111, 117, 177, 333, 351, 481, 531, 767, 999, 1369, 1443, 1593, 2183, 2301, 4107, 4329, 6549, 6903, 12321, 12987, 17797, 19647, 20709, 28379, 36963, 53391, 58941, 80771, 85137, 160173, 242313, 255411, 480519, 726939, 766233, 1050023, 2180817, 3150069, 9450207, 28350621]

約数ペア:

[(1, 28350621), (3, 9450207), (9, 3150069), (13, 2180817), (27, 1050023), (37, 766233), (39, 726939), (59, 480519), (111, 255411), (117, 242313), (177, 160173), (333, 85137), (351, 80771), (481, 58941), (531, 53391), (767, 36963), (999, 28379), (1369, 20709), (1443, 19647), (1593, 17797), (2183, 12987), (2301, 12321), (4107, 6903), (4329, 6549)]