21332885

素因数分解:

$5^1\times 7^4\times {\mathrm{1777}}^1$

素因数の和:1810

約数の個数: 20

約数和(自身を含む): 29881068

約数和(自身を除く): 8548183

約数列:

[1, 5, 7, 35, 49, 245, 343, 1715, 1777, 2401, 8885, 12005, 12439, 62195, 87073, 435365, 609511, 3047555, 4266577, 21332885]

約数ペア:

[(1, 21332885), (5, 4266577), (7, 3047555), (35, 609511), (49, 435365), (245, 87073), (343, 62195), (1715, 12439), (1777, 12005), (2401, 8885)]