21199304

素因数分解:

$2^3\times 7^1\times {\mathrm{378559}}^1$

素因数の和:378572

約数の個数: 16

約数和(自身を含む): 45427200

約数和(自身を除く): 24227896

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 378559, 757118, 1514236, 2649913, 3028472, 5299826, 10599652, 21199304]

約数ペア:

[(1, 21199304), (2, 10599652), (4, 5299826), (7, 3028472), (8, 2649913), (14, 1514236), (28, 757118), (56, 378559)]