20956986

素因数分解:

$2^1\times 3^2\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{389}}^1$

素因数の和:511

約数の個数: 48

約数和(自身を含む): 47272680

約数和(自身を除く): 26315694

約数列:

[1, 2, 3, 6, 9, 18, 41, 73, 82, 123, 146, 219, 246, 369, 389, 438, 657, 738, 778, 1167, 1314, 2334, 2993, 3501, 5986, 7002, 8979, 15949, 17958, 26937, 28397, 31898, 47847, 53874, 56794, 85191, 95694, 143541, 170382, 255573, 287082, 511146, 1164277, 2328554, 3492831, 6985662, 10478493, 20956986]

約数ペア:

[(1, 20956986), (2, 10478493), (3, 6985662), (6, 3492831), (9, 2328554), (18, 1164277), (41, 511146), (73, 287082), (82, 255573), (123, 170382), (146, 143541), (219, 95694), (246, 85191), (369, 56794), (389, 53874), (438, 47847), (657, 31898), (738, 28397), (778, 26937), (1167, 17958), (1314, 15949), (2334, 8979), (2993, 7002), (3501, 5986)]