128464880

素因数分解:

$2^4\times 5^1\times {\mathrm{1605811}}^1$

素因数の和:1605824

約数の個数: 20

約数和(自身を含む): 298681032

約数和(自身を除く): 170216152

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1605811, 3211622, 6423244, 8029055, 12846488, 16058110, 25692976, 32116220, 64232440, 128464880]

約数ペア:

[(1, 128464880), (2, 64232440), (4, 32116220), (5, 25692976), (8, 16058110), (10, 12846488), (16, 8029055), (20, 6423244), (40, 3211622), (80, 1605811)]