81640076

素因数分解:

$2^2\times 7^2\times {\mathrm{416531}}^1$

素因数の和:416549

約数の個数: 18

約数和(自身を含む): 166196268

約数和(自身を除く): 84556192

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 416531, 833062, 1666124, 2915717, 5831434, 11662868, 20410019, 40820038, 81640076]

約数ペア:

[(1, 81640076), (2, 40820038), (4, 20410019), (7, 11662868), (14, 5831434), (28, 2915717), (49, 1666124), (98, 833062), (196, 416531)]