28254237

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{389}}^1$

素因数の和:505

約数の個数: 32

約数和(自身を含む): 43130880

約数和(自身を除く): 14876643

約数列:

[1, 3, 11, 31, 33, 71, 93, 213, 341, 389, 781, 1023, 1167, 2201, 2343, 4279, 6603, 12059, 12837, 24211, 27619, 36177, 72633, 82857, 132649, 303809, 397947, 856189, 911427, 2568567, 9418079, 28254237]

約数ペア:

[(1, 28254237), (3, 9418079), (11, 2568567), (31, 911427), (33, 856189), (71, 397947), (93, 303809), (213, 132649), (341, 82857), (389, 72633), (781, 36177), (1023, 27619), (1167, 24211), (2201, 12837), (2343, 12059), (4279, 6603)]