18985988

素因数分解:

$2^2\times 7^1\times {\mathrm{491}}^1\times {\mathrm{1381}}^1$

素因数の和:1883

約数の個数: 24

約数和(自身を含む): 38076864

約数和(自身を除く): 19090876

約数列:

[1, 2, 4, 7, 14, 28, 491, 982, 1381, 1964, 2762, 3437, 5524, 6874, 9667, 13748, 19334, 38668, 678071, 1356142, 2712284, 4746497, 9492994, 18985988]

約数ペア:

[(1, 18985988), (2, 9492994), (4, 4746497), (7, 2712284), (14, 1356142), (28, 678071), (491, 38668), (982, 19334), (1381, 13748), (1964, 9667), (2762, 6874), (3437, 5524)]