20400081

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{5179}}^1$

素因数の和:5296

約数の個数: 16

約数和(自身を含む): 29588160

約数和(自身を除く): 9188079

約数列:

[1, 3, 13, 39, 101, 303, 1313, 3939, 5179, 15537, 67327, 201981, 523079, 1569237, 6800027, 20400081]

約数ペア:

[(1, 20400081), (3, 6800027), (13, 1569237), (39, 523079), (101, 201981), (303, 67327), (1313, 15537), (3939, 5179)]