18197179

素因数分解:

$7^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1$

素因数の和:105

約数の個数: 40

約数和(自身を含む): 25410672

約数和(自身を除く): 7213493

約数列:

[1, 7, 11, 13, 49, 53, 77, 91, 143, 343, 371, 539, 583, 637, 689, 1001, 2401, 2597, 3773, 4081, 4459, 4823, 7007, 7579, 18179, 26411, 28567, 31213, 33761, 49049, 53053, 127253, 199969, 236327, 343343, 371371, 1399783, 1654289, 2599597, 18197179]

約数ペア:

[(1, 18197179), (7, 2599597), (11, 1654289), (13, 1399783), (49, 371371), (53, 343343), (77, 236327), (91, 199969), (143, 127253), (343, 53053), (371, 49049), (539, 33761), (583, 31213), (637, 28567), (689, 26411), (1001, 18179), (2401, 7579), (2597, 7007), (3773, 4823), (4081, 4459)]