20857707

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{3793}}^1$

素因数の和:3859

約数の個数: 24

約数和(自身を含む): 33144384

約数和(自身を除く): 12286677

約数列:

[1, 3, 9, 13, 39, 47, 117, 141, 423, 611, 1833, 3793, 5499, 11379, 34137, 49309, 147927, 178271, 443781, 534813, 1604439, 2317523, 6952569, 20857707]

約数ペア:

[(1, 20857707), (3, 6952569), (9, 2317523), (13, 1604439), (39, 534813), (47, 443781), (117, 178271), (141, 147927), (423, 49309), (611, 34137), (1833, 11379), (3793, 5499)]