28080890

素因数分解:

$2^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{137}}^1\times {\mathrm{199}}^1$

素因数の和:446

約数の個数: 32

約数和(自身を含む): 51667200

約数和(自身を除く): 23586310

約数列:

[1, 2, 5, 10, 103, 137, 199, 206, 274, 398, 515, 685, 995, 1030, 1370, 1990, 14111, 20497, 27263, 28222, 40994, 54526, 70555, 102485, 136315, 141110, 204970, 272630, 2808089, 5616178, 14040445, 28080890]

約数ペア:

[(1, 28080890), (2, 14040445), (5, 5616178), (10, 2808089), (103, 272630), (137, 204970), (199, 141110), (206, 136315), (274, 102485), (398, 70555), (515, 54526), (685, 40994), (995, 28222), (1030, 27263), (1370, 20497), (1990, 14111)]