21104044

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{31219}}^1$

素因数の和:31249

約数の個数: 18

約数和(自身を含む): 39992820

約数和(自身を除く): 18888776

約数列:

[1, 2, 4, 13, 26, 52, 169, 338, 676, 31219, 62438, 124876, 405847, 811694, 1623388, 5276011, 10552022, 21104044]

約数ペア:

[(1, 21104044), (2, 10552022), (4, 5276011), (13, 1623388), (26, 811694), (52, 405847), (169, 124876), (338, 62438), (676, 31219)]