20970508

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{13009}}^1$

素因数の和:13057

約数の個数: 24

約数和(自身を含む): 40799360

約数和(自身を除く): 19828852

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 403, 806, 1612, 13009, 26018, 52036, 169117, 338234, 403279, 676468, 806558, 1613116, 5242627, 10485254, 20970508]

約数ペア:

[(1, 20970508), (2, 10485254), (4, 5242627), (13, 1613116), (26, 806558), (31, 676468), (52, 403279), (62, 338234), (124, 169117), (403, 52036), (806, 26018), (1612, 13009)]