20007

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1$

素因数の和:44

約数の個数: 20

約数和(自身を含む): 33880

約数和(自身を除く): 13873

約数列:

[1, 3, 9, 13, 19, 27, 39, 57, 81, 117, 171, 247, 351, 513, 741, 1053, 1539, 2223, 6669, 20007]

約数ペア:

[(1, 20007), (3, 6669), (9, 2223), (13, 1539), (19, 1053), (27, 741), (39, 513), (57, 351), (81, 247), (117, 171)]