20765493

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{7013}}^1$

素因数の和:7073

約数の個数: 24

約数和(自身を含む): 35013888

約数和(自身を除く): 14248395

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987, 2961, 7013, 21039, 49091, 63117, 147273, 329611, 441819, 988833, 2307277, 2966499, 6921831, 20765493]

約数ペア:

[(1, 20765493), (3, 6921831), (7, 2966499), (9, 2307277), (21, 988833), (47, 441819), (63, 329611), (141, 147273), (329, 63117), (423, 49091), (987, 21039), (2961, 7013)]