21643285

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{1487}}^1$

素因数の和:1604

約数の個数: 16

約数和(自身を含む): 26998272

約数和(自身を除く): 5354987

約数列:

[1, 5, 41, 71, 205, 355, 1487, 2911, 7435, 14555, 60967, 105577, 304835, 527885, 4328657, 21643285]

約数ペア:

[(1, 21643285), (5, 4328657), (41, 527885), (71, 304835), (205, 105577), (355, 60967), (1487, 14555), (2911, 7435)]