18990580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{135647}}^1$

素因数の和:135663

約数の個数: 24

約数和(自身を含む): 45577728

約数和(自身を除く): 26587148

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 135647, 271294, 542588, 678235, 949529, 1356470, 1899058, 2712940, 3798116, 4747645, 9495290, 18990580]

約数ペア:

[(1, 18990580), (2, 9495290), (4, 4747645), (5, 3798116), (7, 2712940), (10, 1899058), (14, 1356470), (20, 949529), (28, 678235), (35, 542588), (70, 271294), (140, 135647)]