20207420

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{23497}}^1$

素因数の和:23549

約数の個数: 24

約数和(自身を含む): 43424304

約数和(自身を除く): 23216884

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 23497, 46994, 93988, 117485, 234970, 469940, 1010371, 2020742, 4041484, 5051855, 10103710, 20207420]

約数ペア:

[(1, 20207420), (2, 10103710), (4, 5051855), (5, 4041484), (10, 2020742), (20, 1010371), (43, 469940), (86, 234970), (172, 117485), (215, 93988), (430, 46994), (860, 23497)]