28078278

素因数分解:

$2^1\times 3^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1\times {\mathrm{257}}^1$

素因数の和:532

約数の個数: 32

約数和(自身を含む): 57214080

約数和(自身を除く): 29135802

約数列:

[1, 2, 3, 6, 131, 139, 257, 262, 278, 393, 417, 514, 771, 786, 834, 1542, 18209, 33667, 35723, 36418, 54627, 67334, 71446, 101001, 107169, 109254, 202002, 214338, 4679713, 9359426, 14039139, 28078278]

約数ペア:

[(1, 28078278), (2, 14039139), (3, 9359426), (6, 4679713), (131, 214338), (139, 202002), (257, 109254), (262, 107169), (278, 101001), (393, 71446), (417, 67334), (514, 54627), (771, 36418), (786, 35723), (834, 33667), (1542, 18209)]