20218492

素因数分解:

$2^2\times 7^1\times {\mathrm{643}}^1\times {\mathrm{1123}}^1$

素因数の和:1777

約数の個数: 24

約数和(自身を含む): 40535936

約数和(自身を除く): 20317444

約数列:

[1, 2, 4, 7, 14, 28, 643, 1123, 1286, 2246, 2572, 4492, 4501, 7861, 9002, 15722, 18004, 31444, 722089, 1444178, 2888356, 5054623, 10109246, 20218492]

約数ペア:

[(1, 20218492), (2, 10109246), (4, 5054623), (7, 2888356), (14, 1444178), (28, 722089), (643, 31444), (1123, 18004), (1286, 15722), (2246, 9002), (2572, 7861), (4492, 4501)]