21172816

素因数分解:

$2^4\times 7^1\times {\mathrm{189043}}^1$

素因数の和:189058

約数の個数: 20

約数和(自身を含む): 46882912

約数和(自身を除く): 25710096

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 189043, 378086, 756172, 1323301, 1512344, 2646602, 3024688, 5293204, 10586408, 21172816]

約数ペア:

[(1, 21172816), (2, 10586408), (4, 5293204), (7, 3024688), (8, 2646602), (14, 1512344), (16, 1323301), (28, 756172), (56, 378086), (112, 189043)]