9991998

素因数分解:

$2^1\times 3^4\times {\mathrm{37}}^1\times {\mathrm{1667}}^1$

素因数の和:1718

約数の個数: 40

約数和(自身を含む): 23008392

約数和(自身を除く): 13016394

約数列:

[1, 2, 3, 6, 9, 18, 27, 37, 54, 74, 81, 111, 162, 222, 333, 666, 999, 1667, 1998, 2997, 3334, 5001, 5994, 10002, 15003, 30006, 45009, 61679, 90018, 123358, 135027, 185037, 270054, 370074, 555111, 1110222, 1665333, 3330666, 4995999, 9991998]

約数ペア:

[(1, 9991998), (2, 4995999), (3, 3330666), (6, 1665333), (9, 1110222), (18, 555111), (27, 370074), (37, 270054), (54, 185037), (74, 135027), (81, 123358), (111, 90018), (162, 61679), (222, 45009), (333, 30006), (666, 15003), (999, 10002), (1667, 5994), (1998, 5001), (2997, 3334)]