21493059

素因数分解:

$3^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{5303}}^1$

素因数の和:5506

約数の個数: 16

約数和(自身を含む): 32927232

約数和(自身を除く): 11434173

約数列:

[1, 3, 7, 21, 193, 579, 1351, 4053, 5303, 15909, 37121, 111363, 1023479, 3070437, 7164353, 21493059]

約数ペア:

[(1, 21493059), (3, 7164353), (7, 3070437), (21, 1023479), (193, 111363), (579, 37121), (1351, 15909), (4053, 5303)]