21000907972

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{477293363}}^1$

素因数の和:477293378

約数の個数: 12

約数和(自身を含む): 40092642576

約数和(自身を除く): 19091734604

約数列:

[1, 2, 4, 11, 22, 44, 477293363, 954586726, 1909173452, 5250226993, 10500453986, 21000907972]

約数ペア:

[(1, 21000907972), (2, 10500453986), (4, 5250226993), (11, 1909173452), (22, 954586726), (44, 477293363)]