28080689

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:297

約数の個数: 32

約数和(自身を含む): 36960000

約数和(自身を除く): 8879311

約数列:

[1, 7, 13, 19, 91, 109, 133, 149, 247, 763, 1043, 1417, 1729, 1937, 2071, 2831, 9919, 13559, 14497, 16241, 19817, 26923, 36803, 113687, 188461, 211133, 257621, 308579, 1477931, 2160053, 4011527, 28080689]

約数ペア:

[(1, 28080689), (7, 4011527), (13, 2160053), (19, 1477931), (91, 308579), (109, 257621), (133, 211133), (149, 188461), (247, 113687), (763, 36803), (1043, 26923), (1417, 19817), (1729, 16241), (1937, 14497), (2071, 13559), (2831, 9919)]