28755639

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{4091}}^1$

素因数の和:4179

約数の個数: 24

約数和(自身を含む): 45961344

約数和(自身を除く): 17205705

約数列:

[1, 3, 9, 11, 33, 71, 99, 213, 639, 781, 2343, 4091, 7029, 12273, 36819, 45001, 135003, 290461, 405009, 871383, 2614149, 3195071, 9585213, 28755639]

約数ペア:

[(1, 28755639), (3, 9585213), (9, 3195071), (11, 2614149), (33, 871383), (71, 405009), (99, 290461), (213, 135003), (639, 45001), (781, 36819), (2343, 12273), (4091, 7029)]