21380159

素因数分解:

${\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:310

約数の個数: 16

約数和(自身を含む): 22809600

約数和(自身を除く): 1429441

約数列:

[1, 43, 47, 71, 149, 2021, 3053, 3337, 6407, 7003, 10579, 143491, 301129, 454897, 497213, 21380159]

約数ペア:

[(1, 21380159), (43, 497213), (47, 454897), (71, 301129), (149, 143491), (2021, 10579), (3053, 7003), (3337, 6407)]