18850139

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{149}}^1$

素因数の和:251

約数の個数: 32

約数和(自身を含む): 24883200

約数和(自身を除く): 6033061

約数列:

[1, 7, 11, 31, 53, 77, 149, 217, 341, 371, 583, 1043, 1639, 1643, 2387, 4081, 4619, 7897, 11473, 11501, 18073, 32333, 50809, 55279, 86867, 126511, 244807, 355663, 608069, 1713649, 2692877, 18850139]

約数ペア:

[(1, 18850139), (7, 2692877), (11, 1713649), (31, 608069), (53, 355663), (77, 244807), (149, 126511), (217, 86867), (341, 55279), (371, 50809), (583, 32333), (1043, 18073), (1639, 11501), (1643, 11473), (2387, 7897), (4081, 4619)]