28571543

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1$

素因数の和:144

約数の個数: 64

約数和(自身を含む): 42964992

約数和(自身を除く): 14393449

約数列:

[1, 7, 11, 13, 17, 23, 73, 77, 91, 119, 143, 161, 187, 221, 253, 299, 391, 511, 803, 949, 1001, 1241, 1309, 1547, 1679, 1771, 2093, 2431, 2737, 3289, 4301, 5083, 5621, 6643, 8687, 10439, 11753, 13651, 16133, 17017, 18469, 21827, 23023, 28543, 30107, 35581, 55913, 73073, 95557, 112931, 129283, 152789, 177463, 199801, 240097, 313973, 371059, 391391, 1242241, 1680679, 2197811, 2597413, 4081649, 28571543]

約数ペア:

[(1, 28571543), (7, 4081649), (11, 2597413), (13, 2197811), (17, 1680679), (23, 1242241), (73, 391391), (77, 371059), (91, 313973), (119, 240097), (143, 199801), (161, 177463), (187, 152789), (221, 129283), (253, 112931), (299, 95557), (391, 73073), (511, 55913), (803, 35581), (949, 30107), (1001, 28543), (1241, 23023), (1309, 21827), (1547, 18469), (1679, 17017), (1771, 16133), (2093, 13651), (2431, 11753), (2737, 10439), (3289, 8687), (4301, 6643), (5083, 5621)]