18852687

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{6367}}^1$

素因数の和:6427

約数の個数: 24

約数和(自身を含む): 31789056

約数和(自身を除く): 12936369

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987, 2961, 6367, 19101, 44569, 57303, 133707, 299249, 401121, 897747, 2094743, 2693241, 6284229, 18852687]

約数ペア:

[(1, 18852687), (3, 6284229), (7, 2693241), (9, 2094743), (21, 897747), (47, 401121), (63, 299249), (141, 133707), (329, 57303), (423, 44569), (987, 19101), (2961, 6367)]