18718852

素因数分解:

$2^2\times {\mathrm{131}}^1\times {\mathrm{139}}^1\times {\mathrm{257}}^1$

素因数の和:531

約数の個数: 24

約数和(自身を含む): 33374880

約数和(自身を除く): 14656028

約数列:

[1, 2, 4, 131, 139, 257, 262, 278, 514, 524, 556, 1028, 18209, 33667, 35723, 36418, 67334, 71446, 72836, 134668, 142892, 4679713, 9359426, 18718852]

約数ペア:

[(1, 18718852), (2, 9359426), (4, 4679713), (131, 142892), (139, 134668), (257, 72836), (262, 71446), (278, 67334), (514, 36418), (524, 35723), (556, 33667), (1028, 18209)]