28139397

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1$

素因数の和:194

約数の個数: 48

約数和(自身を含む): 45581760

約数和(自身を除く): 17442363

約数列:

[1, 3, 11, 13, 33, 39, 67, 89, 121, 143, 201, 267, 363, 429, 737, 871, 979, 1157, 1573, 2211, 2613, 2937, 3471, 4719, 5963, 8107, 9581, 10769, 12727, 17889, 24321, 28743, 32307, 38181, 65593, 77519, 105391, 139997, 196779, 232557, 316173, 419991, 721523, 852709, 2164569, 2558127, 9379799, 28139397]

約数ペア:

[(1, 28139397), (3, 9379799), (11, 2558127), (13, 2164569), (33, 852709), (39, 721523), (67, 419991), (89, 316173), (121, 232557), (143, 196779), (201, 139997), (267, 105391), (363, 77519), (429, 65593), (737, 38181), (871, 32307), (979, 28743), (1157, 24321), (1573, 17889), (2211, 12727), (2613, 10769), (2937, 9581), (3471, 8107), (4719, 5963)]