21711856

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{79823}}^1$

素因数の和:79848

約数の個数: 20

約数和(自身を含む): 44541792

約数和(自身を除く): 22829936

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 79823, 159646, 319292, 638584, 1277168, 1356991, 2713982, 5427964, 10855928, 21711856]

約数ペア:

[(1, 21711856), (2, 10855928), (4, 5427964), (8, 2713982), (16, 1356991), (17, 1277168), (34, 638584), (68, 319292), (136, 159646), (272, 79823)]