18278703

素因数分解:

$3^5\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1$

素因数の和:178

約数の個数: 48

約数和(自身を含む): 29877120

約数和(自身を除く): 11598417

約数列:

[1, 3, 9, 19, 27, 37, 57, 81, 107, 111, 171, 243, 321, 333, 513, 703, 963, 999, 1539, 2033, 2109, 2889, 2997, 3959, 4617, 6099, 6327, 8667, 8991, 11877, 18297, 18981, 26001, 35631, 54891, 56943, 75221, 106893, 164673, 170829, 225663, 320679, 494019, 676989, 962037, 2030967, 6092901, 18278703]

約数ペア:

[(1, 18278703), (3, 6092901), (9, 2030967), (19, 962037), (27, 676989), (37, 494019), (57, 320679), (81, 225663), (107, 170829), (111, 164673), (171, 106893), (243, 75221), (321, 56943), (333, 54891), (513, 35631), (703, 26001), (963, 18981), (999, 18297), (1539, 11877), (2033, 8991), (2109, 8667), (2889, 6327), (2997, 6099), (3959, 4617)]