20980479

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{13121}}^1$

素因数の和:13178

約数の個数: 16

約数和(自身を含む): 30862944

約数和(自身を除く): 9882465

約数列:

[1, 3, 13, 39, 41, 123, 533, 1599, 13121, 39363, 170573, 511719, 537961, 1613883, 6993493, 20980479]

約数ペア:

[(1, 20980479), (3, 6993493), (13, 1613883), (39, 537961), (41, 511719), (123, 170573), (533, 39363), (1599, 13121)]