21171703

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{1039}}^1$

素因数の和:1158

約数の個数: 16

約数和(自身を含む): 25159680

約数和(自身を除く): 3987977

約数列:

[1, 7, 41, 71, 287, 497, 1039, 2911, 7273, 20377, 42599, 73769, 298193, 516383, 3024529, 21171703]

約数ペア:

[(1, 21171703), (7, 3024529), (41, 516383), (71, 298193), (287, 73769), (497, 42599), (1039, 20377), (2911, 7273)]