21288143

素因数分解:

${\mathrm{41}}^1\times {\mathrm{71}}^2\times {\mathrm{103}}^1$

素因数の和:286

約数の個数: 12

約数和(自身を含む): 22333584

約数和(自身を除く): 1045441

約数列:

[1, 41, 71, 103, 2911, 4223, 5041, 7313, 206681, 299833, 519223, 21288143]

約数ペア:

[(1, 21288143), (41, 519223), (71, 299833), (103, 206681), (2911, 7313), (4223, 5041)]