78491780

素因数分解:

$2^2\times 5^1\times {\mathrm{907}}^1\times {\mathrm{4327}}^1$

素因数の和:5243

約数の個数: 24

約数和(自身を含む): 165052608

約数和(自身を除く): 86560828

約数列:

[1, 2, 4, 5, 10, 20, 907, 1814, 3628, 4327, 4535, 8654, 9070, 17308, 18140, 21635, 43270, 86540, 3924589, 7849178, 15698356, 19622945, 39245890, 78491780]

約数ペア:

[(1, 78491780), (2, 39245890), (4, 19622945), (5, 15698356), (10, 7849178), (20, 3924589), (907, 86540), (1814, 43270), (3628, 21635), (4327, 18140), (4535, 17308), (8654, 9070)]