21660086

素因数分解:

$2^1\times 7^1\times {\mathrm{691}}^1\times {\mathrm{2239}}^1$

素因数の和:2939

約数の個数: 16

約数和(自身を含む): 37201920

約数和(自身を除く): 15541834

約数列:

[1, 2, 7, 14, 691, 1382, 2239, 4478, 4837, 9674, 15673, 31346, 1547149, 3094298, 10830043, 21660086]

約数ペア:

[(1, 21660086), (2, 10830043), (7, 3094298), (14, 1547149), (691, 31346), (1382, 15673), (2239, 9674), (4478, 4837)]