20864012

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{401231}}^1$

素因数の和:401248

約数の個数: 12

約数和(自身を含む): 39320736

約数和(自身を除く): 18456724

約数列:

[1, 2, 4, 13, 26, 52, 401231, 802462, 1604924, 5216003, 10432006, 20864012]

約数ペア:

[(1, 20864012), (2, 10432006), (4, 5216003), (13, 1604924), (26, 802462), (52, 401231)]