21317708

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{171917}}^1$

素因数の和:171952

約数の個数: 12

約数和(自身を含む): 38509632

約数和(自身を除く): 17191924

約数列:

[1, 2, 4, 31, 62, 124, 171917, 343834, 687668, 5329427, 10658854, 21317708]

約数ペア:

[(1, 21317708), (2, 10658854), (4, 5329427), (31, 687668), (62, 343834), (124, 171917)]