679995

素因数分解:

$3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1$

素因数の和:113

約数の個数: 40

約数和(自身を含む): 1289376

約数和(自身を除く): 609381

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 73, 81, 115, 135, 207, 219, 345, 365, 405, 621, 657, 1035, 1095, 1679, 1863, 1971, 3105, 3285, 5037, 5913, 8395, 9315, 9855, 15111, 25185, 29565, 45333, 75555, 135999, 226665, 679995]

約数ペア:

[(1, 679995), (3, 226665), (5, 135999), (9, 75555), (15, 45333), (23, 29565), (27, 25185), (45, 15111), (69, 9855), (73, 9315), (81, 8395), (115, 5913), (135, 5037), (207, 3285), (219, 3105), (345, 1971), (365, 1863), (405, 1679), (621, 1095), (657, 1035)]