209649748

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{680681}}^1$

素因数の和:680703

約数の個数: 24

約数和(自身を含む): 457418304

約数和(自身を除く): 247768556

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 680681, 1361362, 2722724, 4764767, 7487491, 9529534, 14974982, 19059068, 29949964, 52412437, 104824874, 209649748]

約数ペア:

[(1, 209649748), (2, 104824874), (4, 52412437), (7, 29949964), (11, 19059068), (14, 14974982), (22, 9529534), (28, 7487491), (44, 4764767), (77, 2722724), (154, 1361362), (308, 680681)]