21236812

素因数分解:

$2^2\times {\mathrm{1259}}^1\times {\mathrm{4217}}^1$

素因数の和:5480

約数の個数: 12

約数和(自身を含む): 37202760

約数和(自身を除く): 15965948

約数列:

[1, 2, 4, 1259, 2518, 4217, 5036, 8434, 16868, 5309203, 10618406, 21236812]

約数ペア:

[(1, 21236812), (2, 10618406), (4, 5309203), (1259, 16868), (2518, 8434), (4217, 5036)]