287730278

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{2543}}^1$

素因数の和:2732

約数の個数: 32

約数和(自身を含む): 487226880

約数和(自身を除く): 199496602

約数列:

[1, 2, 11, 22, 37, 74, 139, 278, 407, 814, 1529, 2543, 3058, 5086, 5143, 10286, 27973, 55946, 56573, 94091, 113146, 188182, 353477, 706954, 1035001, 2070002, 3888247, 7776494, 13078649, 26157298, 143865139, 287730278]

約数ペア:

[(1, 287730278), (2, 143865139), (11, 26157298), (22, 13078649), (37, 7776494), (74, 3888247), (139, 2070002), (278, 1035001), (407, 706954), (814, 353477), (1529, 188182), (2543, 113146), (3058, 94091), (5086, 56573), (5143, 55946), (10286, 27973)]