20553421

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{6719}}^1$

素因数の和:6768

約数の個数: 16

約数和(自身を含む): 25804800

約数和(自身を除く): 5251379

約数列:

[1, 7, 19, 23, 133, 161, 437, 3059, 6719, 47033, 127661, 154537, 893627, 1081759, 2936203, 20553421]

約数ペア:

[(1, 20553421), (7, 2936203), (19, 1081759), (23, 893627), (133, 154537), (161, 127661), (437, 47033), (3059, 6719)]