18985239

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7727}}^1$

素因数の和:7756

約数の個数: 32

約数和(自身を含む): 34621440

約数和(自身を除く): 15636201

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 91, 117, 189, 273, 351, 819, 2457, 7727, 23181, 54089, 69543, 100451, 162267, 208629, 301353, 486801, 703157, 904059, 1460403, 2109471, 2712177, 6328413, 18985239]

約数ペア:

[(1, 18985239), (3, 6328413), (7, 2712177), (9, 2109471), (13, 1460403), (21, 904059), (27, 703157), (39, 486801), (63, 301353), (91, 208629), (117, 162267), (189, 100451), (273, 69543), (351, 54089), (819, 23181), (2457, 7727)]