18997447

素因数分解:

$7^2\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{113}}^1$

素因数の和:247

約数の個数: 24

約数和(自身を含む): 23080896

約数和(自身を除く): 4083449

約数列:

[1, 7, 47, 49, 73, 113, 329, 511, 791, 2303, 3431, 3577, 5311, 5537, 8249, 24017, 37177, 57743, 168119, 260239, 387703, 404201, 2713921, 18997447]

約数ペア:

[(1, 18997447), (7, 2713921), (47, 404201), (49, 387703), (73, 260239), (113, 168119), (329, 57743), (511, 37177), (791, 24017), (2303, 8249), (3431, 5537), (3577, 5311)]