20661628

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{5443}}^1$

素因数の和:5533

約数の個数: 24

約数和(自身を含む): 39479888

約数和(自身を除く): 18818260

約数列:

[1, 2, 4, 13, 26, 52, 73, 146, 292, 949, 1898, 3796, 5443, 10886, 21772, 70759, 141518, 283036, 397339, 794678, 1589356, 5165407, 10330814, 20661628]

約数ペア:

[(1, 20661628), (2, 10330814), (4, 5165407), (13, 1589356), (26, 794678), (52, 397339), (73, 283036), (146, 141518), (292, 70759), (949, 21772), (1898, 10886), (3796, 5443)]