21099568

素因数分解:

$2^4\times 7^1\times {\mathrm{188389}}^1$

素因数の和:188404

約数の個数: 20

約数和(自身を含む): 46720720

約数和(自身を除く): 25621152

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 188389, 376778, 753556, 1318723, 1507112, 2637446, 3014224, 5274892, 10549784, 21099568]

約数ペア:

[(1, 21099568), (2, 10549784), (4, 5274892), (7, 3014224), (8, 2637446), (14, 1507112), (16, 1318723), (28, 753556), (56, 376778), (112, 188389)]