678743546

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{37889}}^1$

素因数の和:37970

約数の個数: 24

約数和(自身を含む): 1123286940

約数和(自身を除く): 444543394

約数列:

[1, 2, 13, 26, 53, 106, 169, 338, 689, 1378, 8957, 17914, 37889, 75778, 492557, 985114, 2008117, 4016234, 6403241, 12806482, 26105521, 52211042, 339371773, 678743546]

約数ペア:

[(1, 678743546), (2, 339371773), (13, 52211042), (26, 26105521), (53, 12806482), (106, 6403241), (169, 4016234), (338, 2008117), (689, 985114), (1378, 492557), (8957, 75778), (17914, 37889)]