20395509

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{1831}}^1$

素因数の和:1960

約数の個数: 16

約数和(自身を含む): 28139520

約数和(自身を除く): 7744011

約数列:

[1, 3, 47, 79, 141, 237, 1831, 3713, 5493, 11139, 86057, 144649, 258171, 433947, 6798503, 20395509]

約数ペア:

[(1, 20395509), (3, 6798503), (47, 433947), (79, 258171), (141, 144649), (237, 86057), (1831, 11139), (3713, 5493)]