21077768

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{84991}}^1$

素因数の和:85028

約数の個数: 16

約数和(自身を含む): 40796160

約数和(自身を除く): 19718392

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 84991, 169982, 339964, 679928, 2634721, 5269442, 10538884, 21077768]

約数ペア:

[(1, 21077768), (2, 10538884), (4, 5269442), (8, 2634721), (31, 679928), (62, 339964), (124, 169982), (248, 84991)]