81402475

素因数分解:

$5^2\times 7^3\times {\mathrm{11}}^1\times {\mathrm{863}}^1$

素因数の和:905

約数の個数: 48

約数和(自身を含む): 128563200

約数和(自身を除く): 47160725

約数列:

[1, 5, 7, 11, 25, 35, 49, 55, 77, 175, 245, 275, 343, 385, 539, 863, 1225, 1715, 1925, 2695, 3773, 4315, 6041, 8575, 9493, 13475, 18865, 21575, 30205, 42287, 47465, 66451, 94325, 151025, 211435, 237325, 296009, 332255, 465157, 1057175, 1480045, 1661275, 2325785, 3256099, 7400225, 11628925, 16280495, 81402475]

約数ペア:

[(1, 81402475), (5, 16280495), (7, 11628925), (11, 7400225), (25, 3256099), (35, 2325785), (49, 1661275), (55, 1480045), (77, 1057175), (175, 465157), (245, 332255), (275, 296009), (343, 237325), (385, 211435), (539, 151025), (863, 94325), (1225, 66451), (1715, 47465), (1925, 42287), (2695, 30205), (3773, 21575), (4315, 18865), (6041, 13475), (8575, 9493)]