28497287

素因数分解:

$7^1\times {\mathrm{13}}^3\times {\mathrm{17}}^1\times {\mathrm{109}}^1$

素因数の和:172

約数の個数: 32

約数和(自身を含む): 37699200

約数和(自身を除く): 9201913

約数列:

[1, 7, 13, 17, 91, 109, 119, 169, 221, 763, 1183, 1417, 1547, 1853, 2197, 2873, 9919, 12971, 15379, 18421, 20111, 24089, 37349, 128947, 168623, 239473, 261443, 313157, 1676311, 2192099, 4071041, 28497287]

約数ペア:

[(1, 28497287), (7, 4071041), (13, 2192099), (17, 1676311), (91, 313157), (109, 261443), (119, 239473), (169, 168623), (221, 128947), (763, 37349), (1183, 24089), (1417, 20111), (1547, 18421), (1853, 15379), (2197, 12971), (2873, 9919)]