20985796

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{443}}^1\times {\mathrm{911}}^1$

素因数の和:1371

約数の個数: 24

約数和(自身を含む): 39682944

約数和(自身を除く): 18697148

約数列:

[1, 2, 4, 13, 26, 52, 443, 886, 911, 1772, 1822, 3644, 5759, 11518, 11843, 23036, 23686, 47372, 403573, 807146, 1614292, 5246449, 10492898, 20985796]

約数ペア:

[(1, 20985796), (2, 10492898), (4, 5246449), (13, 1614292), (26, 807146), (52, 403573), (443, 47372), (886, 23686), (911, 23036), (1772, 11843), (1822, 11518), (3644, 5759)]