27945

素因数分解:

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

素因数の和:43

約数の個数: 24

約数和(自身を含む): 52416

約数和(自身を除く): 24471

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 81, 115, 135, 207, 243, 345, 405, 621, 1035, 1215, 1863, 3105, 5589, 9315, 27945]

約数ペア:

[(1, 27945), (3, 9315), (5, 5589), (9, 3105), (15, 1863), (23, 1215), (27, 1035), (45, 621), (69, 405), (81, 345), (115, 243), (135, 207)]