21252170

素因数分解:

$2^1\times 5^1\times {\mathrm{251}}^1\times {\mathrm{8467}}^1$

素因数の和:8725

約数の個数: 16

約数和(自身を含む): 38410848

約数和(自身を除く): 17158678

約数列:

[1, 2, 5, 10, 251, 502, 1255, 2510, 8467, 16934, 42335, 84670, 2125217, 4250434, 10626085, 21252170]

約数ペア:

[(1, 21252170), (2, 10626085), (5, 4250434), (10, 2125217), (251, 84670), (502, 42335), (1255, 16934), (2510, 8467)]