20809047

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{52153}}^1$

素因数の和:52182

約数の個数: 16

約数和(自身を含む): 33378560

約数和(自身を除く): 12569513

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 52153, 156459, 365071, 990907, 1095213, 2972721, 6936349, 20809047]

約数ペア:

[(1, 20809047), (3, 6936349), (7, 2972721), (19, 1095213), (21, 990907), (57, 365071), (133, 156459), (399, 52153)]