19911304

素因数分解:

$2^3\times 7^1\times {\mathrm{355559}}^1$

素因数の和:355572

約数の個数: 16

約数和(自身を含む): 42667200

約数和(自身を除く): 22755896

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 355559, 711118, 1422236, 2488913, 2844472, 4977826, 9955652, 19911304]

約数ペア:

[(1, 19911304), (2, 9955652), (4, 4977826), (7, 2844472), (8, 2488913), (14, 1422236), (28, 711118), (56, 355559)]