21247204

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{4513}}^1$

素因数の和:4635

約数の個数: 24

約数和(自身を含む): 40951008

約数和(自身を除く): 19703804

約数列:

[1, 2, 4, 11, 22, 44, 107, 214, 428, 1177, 2354, 4513, 4708, 9026, 18052, 49643, 99286, 198572, 482891, 965782, 1931564, 5311801, 10623602, 21247204]

約数ペア:

[(1, 21247204), (2, 10623602), (4, 5311801), (11, 1931564), (22, 965782), (44, 482891), (107, 198572), (214, 99286), (428, 49643), (1177, 18052), (2354, 9026), (4513, 4708)]