218218375

素因数分解:

$5^3\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{997}}^1$

素因数の和:1132

約数の個数: 32

約数和(自身を含む): 291447936

約数和(自身を除く): 73229561

約数列:

[1, 5, 17, 25, 85, 103, 125, 425, 515, 997, 1751, 2125, 2575, 4985, 8755, 12875, 16949, 24925, 43775, 84745, 102691, 124625, 218875, 423725, 513455, 1745747, 2118625, 2567275, 8728735, 12836375, 43643675, 218218375]

約数ペア:

[(1, 218218375), (5, 43643675), (17, 12836375), (25, 8728735), (85, 2567275), (103, 2118625), (125, 1745747), (425, 513455), (515, 423725), (997, 218875), (1751, 124625), (2125, 102691), (2575, 84745), (4985, 43775), (8755, 24925), (12875, 16949)]