78628040

素因数分解:

$2^3\times 5^1\times {\mathrm{1965701}}^1$

素因数の和:1965712

約数の個数: 16

約数和(自身を含む): 176913180

約数和(自身を除く): 98285140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1965701, 3931402, 7862804, 9828505, 15725608, 19657010, 39314020, 78628040]

約数ペア:

[(1, 78628040), (2, 39314020), (4, 19657010), (5, 15725608), (8, 9828505), (10, 7862804), (20, 3931402), (40, 1965701)]