21253870

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{4111}}^1$

素因数の和:4176

約数の個数: 32

約数和(自身を含む): 42633216

約数和(自身を除く): 21379346

約数列:

[1, 2, 5, 10, 11, 22, 47, 55, 94, 110, 235, 470, 517, 1034, 2585, 4111, 5170, 8222, 20555, 41110, 45221, 90442, 193217, 226105, 386434, 452210, 966085, 1932170, 2125387, 4250774, 10626935, 21253870]

約数ペア:

[(1, 21253870), (2, 10626935), (5, 4250774), (10, 2125387), (11, 1932170), (22, 966085), (47, 452210), (55, 386434), (94, 226105), (110, 193217), (235, 90442), (470, 45221), (517, 41110), (1034, 20555), (2585, 8222), (4111, 5170)]