20380479

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{13669}}^1$

素因数の和:13750

約数の個数: 16

約数和(自身を含む): 31495680

約数和(自身を除く): 11115201

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 13669, 41007, 95683, 287049, 970499, 2911497, 6793493, 20380479]

約数ペア:

[(1, 20380479), (3, 6793493), (7, 2911497), (21, 970499), (71, 287049), (213, 95683), (497, 41007), (1491, 13669)]