19918467

素因数分解:

$3^6\times {\mathrm{89}}^1\times {\mathrm{307}}^1$

素因数の和:414

約数の個数: 28

約数和(自身を含む): 30297960

約数和(自身を除く): 10379493

約数列:

[1, 3, 9, 27, 81, 89, 243, 267, 307, 729, 801, 921, 2403, 2763, 7209, 8289, 21627, 24867, 27323, 64881, 74601, 81969, 223803, 245907, 737721, 2213163, 6639489, 19918467]

約数ペア:

[(1, 19918467), (3, 6639489), (9, 2213163), (27, 737721), (81, 245907), (89, 223803), (243, 81969), (267, 74601), (307, 64881), (729, 27323), (801, 24867), (921, 21627), (2403, 8289), (2763, 7209)]