21828640

素因数分解:

$2^5\times 5^1\times {\mathrm{136429}}^1$

素因数の和:136444

約数の個数: 24

約数和(自身を含む): 51570540

約数和(自身を除く): 29741900

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 136429, 272858, 545716, 682145, 1091432, 1364290, 2182864, 2728580, 4365728, 5457160, 10914320, 21828640]

約数ペア:

[(1, 21828640), (2, 10914320), (4, 5457160), (5, 4365728), (8, 2728580), (10, 2182864), (16, 1364290), (20, 1091432), (32, 682145), (40, 545716), (80, 272858), (160, 136429)]