21097280

素因数分解:

$2^6\times 5^1\times {\mathrm{65929}}^1$

素因数の和:65946

約数の個数: 28

約数和(自身を含む): 50238660

約数和(自身を除く): 29141380

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 65929, 131858, 263716, 329645, 527432, 659290, 1054864, 1318580, 2109728, 2637160, 4219456, 5274320, 10548640, 21097280]

約数ペア:

[(1, 21097280), (2, 10548640), (4, 5274320), (5, 4219456), (8, 2637160), (10, 2109728), (16, 1318580), (20, 1054864), (32, 659290), (40, 527432), (64, 329645), (80, 263716), (160, 131858), (320, 65929)]