20203989

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{631}}^1\times {\mathrm{821}}^1$

素因数の和:1468

約数の個数: 16

約数和(自身を含む): 29092224

約数和(自身を除く): 8888235

約数列:

[1, 3, 13, 39, 631, 821, 1893, 2463, 8203, 10673, 24609, 32019, 518051, 1554153, 6734663, 20203989]

約数ペア:

[(1, 20203989), (3, 6734663), (13, 1554153), (39, 518051), (631, 32019), (821, 24609), (1893, 10673), (2463, 8203)]