21190240

素因数分解:

$2^5\times 5^1\times {\mathrm{132439}}^1$

素因数の和:132454

約数の個数: 24

約数和(自身を含む): 50062320

約数和(自身を除く): 28872080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 132439, 264878, 529756, 662195, 1059512, 1324390, 2119024, 2648780, 4238048, 5297560, 10595120, 21190240]

約数ペア:

[(1, 21190240), (2, 10595120), (4, 5297560), (5, 4238048), (8, 2648780), (10, 2119024), (16, 1324390), (20, 1059512), (32, 662195), (40, 529756), (80, 264878), (160, 132439)]