7021971

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:134

約数の個数: 48

約数和(自身を含む): 11950848

約数和(自身を除く): 4928877

約数列:

[1, 3, 9, 11, 27, 33, 37, 71, 81, 99, 111, 213, 243, 297, 333, 407, 639, 781, 891, 999, 1221, 1917, 2343, 2627, 2673, 2997, 3663, 5751, 7029, 7881, 8991, 10989, 17253, 21087, 23643, 28897, 32967, 63261, 70929, 86691, 98901, 189783, 212787, 260073, 638361, 780219, 2340657, 7021971]

約数ペア:

[(1, 7021971), (3, 2340657), (9, 780219), (11, 638361), (27, 260073), (33, 212787), (37, 189783), (71, 98901), (81, 86691), (99, 70929), (111, 63261), (213, 32967), (243, 28897), (297, 23643), (333, 21087), (407, 17253), (639, 10989), (781, 8991), (891, 7881), (999, 7029), (1221, 5751), (1917, 3663), (2343, 2997), (2627, 2673)]