20993553

素因数分解:

$3^3\times 7^1\times {\mathrm{277}}^1\times {\mathrm{401}}^1$

素因数の和:694

約数の個数: 32

約数和(自身を含む): 35761920

約数和(自身を除く): 14768367

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 277, 401, 831, 1203, 1939, 2493, 2807, 3609, 5817, 7479, 8421, 10827, 17451, 25263, 52353, 75789, 111077, 333231, 777539, 999693, 2332617, 2999079, 6997851, 20993553]

約数ペア:

[(1, 20993553), (3, 6997851), (7, 2999079), (9, 2332617), (21, 999693), (27, 777539), (63, 333231), (189, 111077), (277, 75789), (401, 52353), (831, 25263), (1203, 17451), (1939, 10827), (2493, 8421), (2807, 7479), (3609, 5817)]