19872741

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{23081}}^1$

素因数の和:23132

約数の個数: 16

約数和(自身を含む): 31022208

約数和(自身を除く): 11149467

約数列:

[1, 3, 7, 21, 41, 123, 287, 861, 23081, 69243, 161567, 484701, 946321, 2838963, 6624247, 19872741]

約数ペア:

[(1, 19872741), (3, 6624247), (7, 2838963), (21, 946321), (41, 484701), (123, 161567), (287, 69243), (861, 23081)]