19721072

素因数分解:

$2^4\times 7^1\times {\mathrm{176081}}^1$

素因数の和:176096

約数の個数: 20

約数和(自身を含む): 43668336

約数和(自身を除く): 23947264

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 176081, 352162, 704324, 1232567, 1408648, 2465134, 2817296, 4930268, 9860536, 19721072]

約数ペア:

[(1, 19721072), (2, 9860536), (4, 4930268), (7, 2817296), (8, 2465134), (14, 1408648), (16, 1232567), (28, 704324), (56, 352162), (112, 176081)]