18983985

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{683}}^1$

素因数の和:817

約数の個数: 32

約数和(自身を含む): 32503680

約数和(自身を除く): 13519695

約数列:

[1, 3, 5, 15, 17, 51, 85, 109, 255, 327, 545, 683, 1635, 1853, 2049, 3415, 5559, 9265, 10245, 11611, 27795, 34833, 58055, 74447, 174165, 223341, 372235, 1116705, 1265599, 3796797, 6327995, 18983985]

約数ペア:

[(1, 18983985), (3, 6327995), (5, 3796797), (15, 1265599), (17, 1116705), (51, 372235), (85, 223341), (109, 174165), (255, 74447), (327, 58055), (545, 34833), (683, 27795), (1635, 11611), (1853, 10245), (2049, 9265), (3415, 5559)]