21347811

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{983}}^1$

素因数の和:1135

約数の個数: 24

約数和(自身を含む): 32747520

約数和(自身を除く): 11399709

約数列:

[1, 3, 9, 19, 57, 127, 171, 381, 983, 1143, 2413, 2949, 7239, 8847, 18677, 21717, 56031, 124841, 168093, 374523, 1123569, 2371979, 7115937, 21347811]

約数ペア:

[(1, 21347811), (3, 7115937), (9, 2371979), (19, 1123569), (57, 374523), (127, 168093), (171, 124841), (381, 56031), (983, 21717), (1143, 18677), (2413, 8847), (2949, 7239)]