81873261

素因数分解:

$3^6\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{257}}^1$

素因数の和:317

約数の個数: 56

約数和(自身を含む): 135357120

約数和(自身を除く): 53483859

約数列:

[1, 3, 9, 19, 23, 27, 57, 69, 81, 171, 207, 243, 257, 437, 513, 621, 729, 771, 1311, 1539, 1863, 2313, 3933, 4617, 4883, 5589, 5911, 6939, 11799, 13851, 14649, 16767, 17733, 20817, 35397, 43947, 53199, 62451, 106191, 112309, 131841, 159597, 187353, 318573, 336927, 395523, 478791, 1010781, 1186569, 1436373, 3032343, 3559707, 4309119, 9097029, 27291087, 81873261]

約数ペア:

[(1, 81873261), (3, 27291087), (9, 9097029), (19, 4309119), (23, 3559707), (27, 3032343), (57, 1436373), (69, 1186569), (81, 1010781), (171, 478791), (207, 395523), (243, 336927), (257, 318573), (437, 187353), (513, 159597), (621, 131841), (729, 112309), (771, 106191), (1311, 62451), (1539, 53199), (1863, 43947), (2313, 35397), (3933, 20817), (4617, 17733), (4883, 16767), (5589, 14649), (5911, 13851), (6939, 11799)]