18978105

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{55009}}^1$

素因数の和:55040

約数の個数: 16

約数和(自身を含む): 31685760

約数和(自身を除く): 12707655

約数列:

[1, 3, 5, 15, 23, 69, 115, 345, 55009, 165027, 275045, 825135, 1265207, 3795621, 6326035, 18978105]

約数ペア:

[(1, 18978105), (3, 6326035), (5, 3795621), (15, 1265207), (23, 825135), (69, 275045), (115, 165027), (345, 55009)]