21025565

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{1511}}^1$

素因数の和:1561

約数の個数: 24

約数和(自身を含む): 28957824

約数和(自身を除く): 7932259

約数列:

[1, 5, 11, 23, 55, 115, 121, 253, 605, 1265, 1511, 2783, 7555, 13915, 16621, 34753, 83105, 173765, 182831, 382283, 914155, 1911415, 4205113, 21025565]

約数ペア:

[(1, 21025565), (5, 4205113), (11, 1911415), (23, 914155), (55, 382283), (115, 182831), (121, 173765), (253, 83105), (605, 34753), (1265, 16621), (1511, 13915), (2783, 7555)]