78261620

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{95441}}^1$

素因数の和:95491

約数の個数: 24

約数和(自身を含む): 168359688

約数和(自身を除く): 90098068

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 95441, 190882, 381764, 477205, 954410, 1908820, 3913081, 7826162, 15652324, 19565405, 39130810, 78261620]

約数ペア:

[(1, 78261620), (2, 39130810), (4, 19565405), (5, 15652324), (10, 7826162), (20, 3913081), (41, 1908820), (82, 954410), (164, 477205), (205, 381764), (410, 190882), (820, 95441)]