21057862

素因数分解:

$2^1\times 7^1\times {\mathrm{353}}^1\times {\mathrm{4261}}^1$

素因数の和:4623

約数の個数: 16

約数和(自身を含む): 36209952

約数和(自身を除く): 15152090

約数列:

[1, 2, 7, 14, 353, 706, 2471, 4261, 4942, 8522, 29827, 59654, 1504133, 3008266, 10528931, 21057862]

約数ペア:

[(1, 21057862), (2, 10528931), (7, 3008266), (14, 1504133), (353, 59654), (706, 29827), (2471, 8522), (4261, 4942)]