80981740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{578441}}^1$

素因数の和:578457

約数の個数: 24

約数和(自身を含む): 194356512

約数和(自身を除く): 113374772

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 578441, 1156882, 2313764, 2892205, 4049087, 5784410, 8098174, 11568820, 16196348, 20245435, 40490870, 80981740]

約数ペア:

[(1, 80981740), (2, 40490870), (4, 20245435), (5, 16196348), (7, 11568820), (10, 8098174), (14, 5784410), (20, 4049087), (28, 2892205), (35, 2313764), (70, 1156882), (140, 578441)]