21099155

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{7829}}^1$

素因数の和:7859

約数の個数: 24

約数和(自身を含む): 32134320

約数和(自身を除く): 11035165

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 245, 385, 539, 2695, 7829, 39145, 54803, 86119, 274015, 383621, 430595, 602833, 1918105, 3014165, 4219831, 21099155]

約数ペア:

[(1, 21099155), (5, 4219831), (7, 3014165), (11, 1918105), (35, 602833), (49, 430595), (55, 383621), (77, 274015), (245, 86119), (385, 54803), (539, 39145), (2695, 7829)]