129664880

素因数分解:

$2^4\times 5^1\times {\mathrm{1620811}}^1$

素因数の和:1620824

約数の個数: 20

約数和(自身を含む): 301471032

約数和(自身を除く): 171806152

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1620811, 3241622, 6483244, 8104055, 12966488, 16208110, 25932976, 32416220, 64832440, 129664880]

約数ペア:

[(1, 129664880), (2, 64832440), (4, 32416220), (5, 25932976), (8, 16208110), (10, 12966488), (16, 8104055), (20, 6483244), (40, 3241622), (80, 1620811)]