51821991

素因数分解:

$3^3\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{277}}^1$

素因数の和:353

約数の個数: 48

約数和(自身を含む): 85468320

約数和(自身を除く): 33646329

約数列:

[1, 3, 9, 13, 27, 39, 41, 117, 123, 169, 277, 351, 369, 507, 533, 831, 1107, 1521, 1599, 2493, 3601, 4563, 4797, 6929, 7479, 10803, 11357, 14391, 20787, 32409, 34071, 46813, 62361, 97227, 102213, 140439, 147641, 187083, 306639, 421317, 442923, 1263951, 1328769, 1919333, 3986307, 5757999, 17273997, 51821991]

約数ペア:

[(1, 51821991), (3, 17273997), (9, 5757999), (13, 3986307), (27, 1919333), (39, 1328769), (41, 1263951), (117, 442923), (123, 421317), (169, 306639), (277, 187083), (351, 147641), (369, 140439), (507, 102213), (533, 97227), (831, 62361), (1107, 46813), (1521, 34071), (1599, 32409), (2493, 20787), (3601, 14391), (4563, 11357), (4797, 10803), (6929, 7479)]