21580218

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{108991}}^1$

素因数の和:109010

約数の個数: 24

約数和(自身を含む): 51008256

約数和(自身を除く): 29428038

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 198, 108991, 217982, 326973, 653946, 980919, 1198901, 1961838, 2397802, 3596703, 7193406, 10790109, 21580218]

約数ペア:

[(1, 21580218), (2, 10790109), (3, 7193406), (6, 3596703), (9, 2397802), (11, 1961838), (18, 1198901), (22, 980919), (33, 653946), (66, 326973), (99, 217982), (198, 108991)]