20697903

素因数分解:

$3^3\times {\mathrm{163}}^1\times {\mathrm{4703}}^1$

素因数の和:4875

約数の個数: 16

約数和(自身を含む): 30858240

約数和(自身を除く): 10160337

約数列:

[1, 3, 9, 27, 163, 489, 1467, 4401, 4703, 14109, 42327, 126981, 766589, 2299767, 6899301, 20697903]

約数ペア:

[(1, 20697903), (3, 6899301), (9, 2299767), (27, 766589), (163, 126981), (489, 42327), (1467, 14109), (4401, 4703)]