18407907

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{149}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 32011200

約数和(自身を除く): 13603293

約数列:

[1, 3, 7, 9, 21, 37, 53, 63, 111, 149, 159, 259, 333, 371, 447, 477, 777, 1043, 1113, 1341, 1961, 2331, 3129, 3339, 5513, 5883, 7897, 9387, 13727, 16539, 17649, 23691, 38591, 41181, 49617, 55279, 71073, 115773, 123543, 165837, 292189, 347319, 497511, 876567, 2045323, 2629701, 6135969, 18407907]

約数ペア:

[(1, 18407907), (3, 6135969), (7, 2629701), (9, 2045323), (21, 876567), (37, 497511), (53, 347319), (63, 292189), (111, 165837), (149, 123543), (159, 115773), (259, 71073), (333, 55279), (371, 49617), (447, 41181), (477, 38591), (777, 23691), (1043, 17649), (1113, 16539), (1341, 13727), (1961, 9387), (2331, 7897), (3129, 5883), (3339, 5513)]