20137775

素因数分解:

$5^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{967}}^1$

素因数の和:1008

約数の個数: 36

約数和(自身を含む): 30788208

約数和(自身を除く): 10650433

約数列:

[1, 5, 7, 17, 25, 35, 49, 85, 119, 175, 245, 425, 595, 833, 967, 1225, 2975, 4165, 4835, 6769, 16439, 20825, 24175, 33845, 47383, 82195, 115073, 169225, 236915, 410975, 575365, 805511, 1184575, 2876825, 4027555, 20137775]

約数ペア:

[(1, 20137775), (5, 4027555), (7, 2876825), (17, 1184575), (25, 805511), (35, 575365), (49, 410975), (85, 236915), (119, 169225), (175, 115073), (245, 82195), (425, 47383), (595, 33845), (833, 24175), (967, 20825), (1225, 16439), (2975, 6769), (4165, 4835)]