129328880

素因数分解:

$2^4\times 5^1\times {\mathrm{1616611}}^1$

素因数の和:1616624

約数の個数: 20

約数和(自身を含む): 300689832

約数和(自身を除く): 171360952

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1616611, 3233222, 6466444, 8083055, 12932888, 16166110, 25865776, 32332220, 64664440, 129328880]

約数ペア:

[(1, 129328880), (2, 64664440), (4, 32332220), (5, 25865776), (8, 16166110), (10, 12932888), (16, 8083055), (20, 6466444), (40, 3233222), (80, 1616611)]