21213005

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{449}}^1\times {\mathrm{859}}^1$

素因数の和:1324

約数の個数: 16

約数和(自身を含む): 27864000

約数和(自身を除く): 6650995

約数列:

[1, 5, 11, 55, 449, 859, 2245, 4295, 4939, 9449, 24695, 47245, 385691, 1928455, 4242601, 21213005]

約数ペア:

[(1, 21213005), (5, 4242601), (11, 1928455), (55, 385691), (449, 47245), (859, 24695), (2245, 9449), (4295, 4939)]