19958785

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{1103}}^1$

素因数の和:1173

約数の個数: 32

約数和(自身を含む): 30523392

約数和(自身を除く): 10564607

約数列:

[1, 5, 7, 11, 35, 47, 55, 77, 235, 329, 385, 517, 1103, 1645, 2585, 3619, 5515, 7721, 12133, 18095, 38605, 51841, 60665, 84931, 259205, 362887, 424655, 570251, 1814435, 2851255, 3991757, 19958785]

約数ペア:

[(1, 19958785), (5, 3991757), (7, 2851255), (11, 1814435), (35, 570251), (47, 424655), (55, 362887), (77, 259205), (235, 84931), (329, 60665), (385, 51841), (517, 38605), (1103, 18095), (1645, 12133), (2585, 7721), (3619, 5515)]