21141172

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{406561}}^1$

素因数の和:406578

約数の個数: 12

約数和(自身を含む): 39843076

約数和(自身を除く): 18701904

約数列:

[1, 2, 4, 13, 26, 52, 406561, 813122, 1626244, 5285293, 10570586, 21141172]

約数ペア:

[(1, 21141172), (2, 10570586), (4, 5285293), (13, 1626244), (26, 813122), (52, 406561)]