21057535

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{2579}}^1$

素因数の和:2678

約数の個数: 16

約数和(自身を含む): 26749440

約数和(自身を除く): 5691905

約数列:

[1, 5, 23, 71, 115, 355, 1633, 2579, 8165, 12895, 59317, 183109, 296585, 915545, 4211507, 21057535]

約数ペア:

[(1, 21057535), (5, 4211507), (23, 915545), (71, 296585), (115, 183109), (355, 59317), (1633, 12895), (2579, 8165)]