19874998

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{69493}}^1$

素因数の和:69519

約数の個数: 16

約数和(自身を含む): 35024976

約数和(自身を除く): 15149978

約数列:

[1, 2, 11, 13, 22, 26, 143, 286, 69493, 138986, 764423, 903409, 1528846, 1806818, 9937499, 19874998]

約数ペア:

[(1, 19874998), (2, 9937499), (11, 1806818), (13, 1528846), (22, 903409), (26, 764423), (143, 138986), (286, 69493)]