18201981

素因数分解:

$3^1\times 7^5\times {\mathrm{19}}^2$

素因数の和:76

約数の個数: 36

約数和(自身を含む): 29882592

約数和(自身を除く): 11680611

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 343, 361, 399, 931, 1029, 1083, 2401, 2527, 2793, 6517, 7203, 7581, 16807, 17689, 19551, 45619, 50421, 53067, 123823, 136857, 319333, 371469, 866761, 957999, 2600283, 6067327, 18201981]

約数ペア:

[(1, 18201981), (3, 6067327), (7, 2600283), (19, 957999), (21, 866761), (49, 371469), (57, 319333), (133, 136857), (147, 123823), (343, 53067), (361, 50421), (399, 45619), (931, 19551), (1029, 17689), (1083, 16807), (2401, 7581), (2527, 7203), (2793, 6517)]