20138251

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1$

素因数の和:211

約数の個数: 32

約数和(自身を含む): 25878528

約数和(自身を除く): 5740277

約数列:

[1, 7, 17, 31, 53, 103, 119, 217, 371, 527, 721, 901, 1643, 1751, 3193, 3689, 5459, 6307, 11501, 12257, 22351, 27931, 38213, 54281, 92803, 169229, 195517, 379967, 649621, 1184603, 2876893, 20138251]

約数ペア:

[(1, 20138251), (7, 2876893), (17, 1184603), (31, 649621), (53, 379967), (103, 195517), (119, 169229), (217, 92803), (371, 54281), (527, 38213), (721, 27931), (901, 22351), (1643, 12257), (1751, 11501), (3193, 6307), (3689, 5459)]