780219

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:128

約数の個数: 32

約数和(自身を含む): 1313280

約数和(自身を除く): 533061

約数列:

[1, 3, 9, 11, 27, 33, 37, 71, 99, 111, 213, 297, 333, 407, 639, 781, 999, 1221, 1917, 2343, 2627, 3663, 7029, 7881, 10989, 21087, 23643, 28897, 70929, 86691, 260073, 780219]

約数ペア:

[(1, 780219), (3, 260073), (9, 86691), (11, 70929), (27, 28897), (33, 23643), (37, 21087), (71, 10989), (99, 7881), (111, 7029), (213, 3663), (297, 2627), (333, 2343), (407, 1917), (639, 1221), (781, 999)]