17781356

素因数分解:

$2^2\times {\mathrm{421}}^1\times {\mathrm{10559}}^1$

素因数の和:10984

約数の個数: 12

約数和(自身を含む): 31194240

約数和(自身を除く): 13412884

約数列:

[1, 2, 4, 421, 842, 1684, 10559, 21118, 42236, 4445339, 8890678, 17781356]

約数ペア:

[(1, 17781356), (2, 8890678), (4, 4445339), (421, 42236), (842, 21118), (1684, 10559)]