199980473

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{421}}^1$

素因数の和:669

約数の個数: 32

約数和(自身を含む): 259276800

約数和(自身を除く): 59296327

約数列:

[1, 7, 11, 31, 77, 199, 217, 341, 421, 1393, 2189, 2387, 2947, 4631, 6169, 13051, 15323, 32417, 43183, 67859, 83779, 91357, 143561, 475013, 586453, 921569, 1004927, 2597149, 6450983, 18180043, 28568639, 199980473]

約数ペア:

[(1, 199980473), (7, 28568639), (11, 18180043), (31, 6450983), (77, 2597149), (199, 1004927), (217, 921569), (341, 586453), (421, 475013), (1393, 143561), (2189, 91357), (2387, 83779), (2947, 67859), (4631, 43183), (6169, 32417), (13051, 15323)]