21188480

素因数分解:

$2^7\times 5^1\times {\mathrm{33107}}^1$

素因数の和:33126

約数の個数: 32

約数和(自身を含む): 50655240

約数和(自身を除く): 29466760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 33107, 66214, 132428, 165535, 264856, 331070, 529712, 662140, 1059424, 1324280, 2118848, 2648560, 4237696, 5297120, 10594240, 21188480]

約数ペア:

[(1, 21188480), (2, 10594240), (4, 5297120), (5, 4237696), (8, 2648560), (10, 2118848), (16, 1324280), (20, 1059424), (32, 662140), (40, 529712), (64, 331070), (80, 264856), (128, 165535), (160, 132428), (320, 66214), (640, 33107)]