21107778

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{206939}}^1$

素因数の和:206961

約数の個数: 16

約数和(自身を含む): 44699040

約数和(自身を除く): 23591262

約数列:

[1, 2, 3, 6, 17, 34, 51, 102, 206939, 413878, 620817, 1241634, 3517963, 7035926, 10553889, 21107778]

約数ペア:

[(1, 21107778), (2, 10553889), (3, 7035926), (6, 3517963), (17, 1241634), (34, 620817), (51, 413878), (102, 206939)]