21325760

素因数分解:

$2^6\times 5^1\times {\mathrm{66643}}^1$

素因数の和:66660

約数の個数: 28

約数和(自身を含む): 50782728

約数和(自身を除く): 29456968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 66643, 133286, 266572, 333215, 533144, 666430, 1066288, 1332860, 2132576, 2665720, 4265152, 5331440, 10662880, 21325760]

約数ペア:

[(1, 21325760), (2, 10662880), (4, 5331440), (5, 4265152), (8, 2665720), (10, 2132576), (16, 1332860), (20, 1066288), (32, 666430), (40, 533144), (64, 333215), (80, 266572), (160, 133286), (320, 66643)]