201720831

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{139}}^1\times {\mathrm{293}}^1$

素因数の和:575

約数の個数: 32

約数和(自身を含む): 295034880

約数和(自身を除く): 93314049

約数列:

[1, 3, 13, 39, 127, 139, 293, 381, 417, 879, 1651, 1807, 3809, 4953, 5421, 11427, 17653, 37211, 40727, 52959, 111633, 122181, 229489, 483743, 529451, 688467, 1451229, 1588353, 5172329, 15516987, 67240277, 201720831]

約数ペア:

[(1, 201720831), (3, 67240277), (13, 15516987), (39, 5172329), (127, 1588353), (139, 1451229), (293, 688467), (381, 529451), (417, 483743), (879, 229489), (1651, 122181), (1807, 111633), (3809, 52959), (4953, 40727), (5421, 37211), (11427, 17653)]