81609880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{185477}}^1$

素因数の和:185499

約数の個数: 32

約数和(自身を含む): 200316240

約数和(自身を除く): 118706360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 185477, 370954, 741908, 927385, 1483816, 1854770, 2040247, 3709540, 4080494, 7419080, 8160988, 10201235, 16321976, 20402470, 40804940, 81609880]

約数ペア:

[(1, 81609880), (2, 40804940), (4, 20402470), (5, 16321976), (8, 10201235), (10, 8160988), (11, 7419080), (20, 4080494), (22, 3709540), (40, 2040247), (44, 1854770), (55, 1483816), (88, 927385), (110, 741908), (220, 370954), (440, 185477)]