20257468

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{739}}^1$

素因数の和:850

約数の個数: 48

約数和(自身を含む): 44755200

約数和(自身を除く): 24497732

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 89, 154, 178, 308, 356, 623, 739, 979, 1246, 1478, 1958, 2492, 2956, 3916, 5173, 6853, 8129, 10346, 13706, 16258, 20692, 27412, 32516, 56903, 65771, 113806, 131542, 227612, 263084, 460397, 723481, 920794, 1446962, 1841588, 2893924, 5064367, 10128734, 20257468]

約数ペア:

[(1, 20257468), (2, 10128734), (4, 5064367), (7, 2893924), (11, 1841588), (14, 1446962), (22, 920794), (28, 723481), (44, 460397), (77, 263084), (89, 227612), (154, 131542), (178, 113806), (308, 65771), (356, 56903), (623, 32516), (739, 27412), (979, 20692), (1246, 16258), (1478, 13706), (1958, 10346), (2492, 8129), (2956, 6853), (3916, 5173)]