21620816

素因数分解:

$2^4\times 7^1\times {\mathrm{193043}}^1$

素因数の和:193058

約数の個数: 20

約数和(自身を含む): 47874912

約数和(自身を除く): 26254096

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 193043, 386086, 772172, 1351301, 1544344, 2702602, 3088688, 5405204, 10810408, 21620816]

約数ペア:

[(1, 21620816), (2, 10810408), (4, 5405204), (7, 3088688), (8, 2702602), (14, 1544344), (16, 1351301), (28, 772172), (56, 386086), (112, 193043)]