21563689

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{2221}}^1$

素因数の和:2320

約数の個数: 16

約数和(自身を含む): 26308480

約数和(自身を除く): 4744791

約数列:

[1, 7, 19, 73, 133, 511, 1387, 2221, 9709, 15547, 42199, 162133, 295393, 1134931, 3080527, 21563689]

約数ペア:

[(1, 21563689), (7, 3080527), (19, 1134931), (73, 295393), (133, 162133), (511, 42199), (1387, 15547), (2221, 9709)]