21671155

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{349}}^1\times {\mathrm{1129}}^1$

素因数の和:1494

約数の個数: 16

約数和(自身を含む): 28476000

約数和(自身を除く): 6804845

約数列:

[1, 5, 11, 55, 349, 1129, 1745, 3839, 5645, 12419, 19195, 62095, 394021, 1970105, 4334231, 21671155]

約数ペア:

[(1, 21671155), (5, 4334231), (11, 1970105), (55, 394021), (349, 62095), (1129, 19195), (1745, 12419), (3839, 5645)]