2780217

素因数分解:

$3^3\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1$

素因数の和:91

約数の個数: 48

約数和(自身を含む): 4851840

約数和(自身を除く): 2071623

約数列:

[1, 3, 9, 11, 23, 27, 33, 37, 69, 99, 111, 121, 207, 253, 297, 333, 363, 407, 621, 759, 851, 999, 1089, 1221, 2277, 2553, 2783, 3267, 3663, 4477, 6831, 7659, 8349, 9361, 10989, 13431, 22977, 25047, 28083, 40293, 75141, 84249, 102971, 120879, 252747, 308913, 926739, 2780217]

約数ペア:

[(1, 2780217), (3, 926739), (9, 308913), (11, 252747), (23, 120879), (27, 102971), (33, 84249), (37, 75141), (69, 40293), (99, 28083), (111, 25047), (121, 22977), (207, 13431), (253, 10989), (297, 9361), (333, 8349), (363, 7659), (407, 6831), (621, 4477), (759, 3663), (851, 3267), (999, 2783), (1089, 2553), (1221, 2277)]