20989661

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{14347}}^1$

素因数の和:14384

約数の個数: 16

約数和(自身を含む): 27548160

約数和(自身を除く): 6558499

約数列:

[1, 7, 11, 19, 77, 133, 209, 1463, 14347, 100429, 157817, 272593, 1104719, 1908151, 2998523, 20989661]

約数ペア:

[(1, 20989661), (7, 2998523), (11, 1908151), (19, 1104719), (77, 272593), (133, 157817), (209, 100429), (1463, 14347)]