81363275

素因数分解:

$5^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{3907}}^1$

素因数の和:3948

約数の個数: 36

約数和(自身を含む): 124297848

約数和(自身を除く): 42934573

約数列:

[1, 5, 7, 17, 25, 35, 49, 85, 119, 175, 245, 425, 595, 833, 1225, 2975, 3907, 4165, 19535, 20825, 27349, 66419, 97675, 136745, 191443, 332095, 464933, 683725, 957215, 1660475, 2324665, 3254531, 4786075, 11623325, 16272655, 81363275]

約数ペア:

[(1, 81363275), (5, 16272655), (7, 11623325), (17, 4786075), (25, 3254531), (35, 2324665), (49, 1660475), (85, 957215), (119, 683725), (175, 464933), (245, 332095), (425, 191443), (595, 136745), (833, 97675), (1225, 66419), (2975, 27349), (3907, 20825), (4165, 19535)]