21095504

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{77557}}^1$

素因数の和:77582

約数の個数: 20

約数和(自身を含む): 43277364

約数和(自身を除く): 22181860

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 77557, 155114, 310228, 620456, 1240912, 1318469, 2636938, 5273876, 10547752, 21095504]

約数ペア:

[(1, 21095504), (2, 10547752), (4, 5273876), (8, 2636938), (16, 1318469), (17, 1240912), (34, 620456), (68, 310228), (136, 155114), (272, 77557)]