21486895

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{449}}^1\times {\mathrm{563}}^1$

素因数の和:1034

約数の個数: 16

約数和(自身を含む): 27410400

約数和(自身を除く): 5923505

約数列:

[1, 5, 17, 85, 449, 563, 2245, 2815, 7633, 9571, 38165, 47855, 252787, 1263935, 4297379, 21486895]

約数ペア:

[(1, 21486895), (5, 4297379), (17, 1263935), (85, 252787), (449, 47855), (563, 38165), (2245, 9571), (2815, 7633)]