21499484

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{239}}^1\times {\mathrm{523}}^1$

素因数の和:809

約数の個数: 24

約数和(自身を含む): 38734080

約数和(自身を除く): 17234596

約数列:

[1, 2, 4, 43, 86, 172, 239, 478, 523, 956, 1046, 2092, 10277, 20554, 22489, 41108, 44978, 89956, 124997, 249994, 499988, 5374871, 10749742, 21499484]

約数ペア:

[(1, 21499484), (2, 10749742), (4, 5374871), (43, 499988), (86, 249994), (172, 124997), (239, 89956), (478, 44978), (523, 41108), (956, 22489), (1046, 20554), (2092, 10277)]