21615800

素因数分解:

$2^3\times 5^2\times {\mathrm{108079}}^1$

素因数の和:108095

約数の個数: 24

約数和(自身を含む): 50257200

約数和(自身を除く): 28641400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 108079, 216158, 432316, 540395, 864632, 1080790, 2161580, 2701975, 4323160, 5403950, 10807900, 21615800]

約数ペア:

[(1, 21615800), (2, 10807900), (4, 5403950), (5, 4323160), (8, 2701975), (10, 2161580), (20, 1080790), (25, 864632), (40, 540395), (50, 432316), (100, 216158), (200, 108079)]