20320685

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{1123}}^1$

素因数の和:1193

約数の個数: 32

約数和(自身を含む): 31076352

約数和(自身を除く): 10755667

約数列:

[1, 5, 7, 11, 35, 47, 55, 77, 235, 329, 385, 517, 1123, 1645, 2585, 3619, 5615, 7861, 12353, 18095, 39305, 52781, 61765, 86471, 263905, 369467, 432355, 580591, 1847335, 2902955, 4064137, 20320685]

約数ペア:

[(1, 20320685), (5, 4064137), (7, 2902955), (11, 1847335), (35, 580591), (47, 432355), (55, 369467), (77, 263905), (235, 86471), (329, 61765), (385, 52781), (517, 39305), (1123, 18095), (1645, 12353), (2585, 7861), (3619, 5615)]