20901223

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{1579}}^1$

素因数の和:1678

約数の個数: 16

約数和(自身を含む): 25077760

約数和(自身を除く): 4176537

約数列:

[1, 7, 31, 61, 217, 427, 1579, 1891, 11053, 13237, 48949, 96319, 342643, 674233, 2985889, 20901223]

約数ペア:

[(1, 20901223), (7, 2985889), (31, 674233), (61, 342643), (217, 96319), (427, 48949), (1579, 13237), (1891, 11053)]