20978763

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{479}}^1\times {\mathrm{1123}}^1$

素因数の和:1618

約数の個数: 16

約数和(自身を含む): 30213120

約数和(自身を除く): 9234357

約数列:

[1, 3, 13, 39, 479, 1123, 1437, 3369, 6227, 14599, 18681, 43797, 537917, 1613751, 6992921, 20978763]

約数ペア:

[(1, 20978763), (3, 6992921), (13, 1613751), (39, 537917), (479, 43797), (1123, 18681), (1437, 14599), (3369, 6227)]