21681567

素因数分解:

$3^3\times {\mathrm{127}}^1\times {\mathrm{6323}}^1$

素因数の和:6459

約数の個数: 16

約数和(自身を含む): 32378880

約数和(自身を除く): 10697313

約数列:

[1, 3, 9, 27, 127, 381, 1143, 3429, 6323, 18969, 56907, 170721, 803021, 2409063, 7227189, 21681567]

約数ペア:

[(1, 21681567), (3, 7227189), (9, 2409063), (27, 803021), (127, 170721), (381, 56907), (1143, 18969), (3429, 6323)]