540988

素因数分解:

$2^2\times 7^1\times {\mathrm{139}}^2$

素因数の和:289

約数の個数: 18

約数和(自身を含む): 1089816

約数和(自身を除く): 548828

約数列:

[1, 2, 4, 7, 14, 28, 139, 278, 556, 973, 1946, 3892, 19321, 38642, 77284, 135247, 270494, 540988]

約数ペア:

[(1, 540988), (2, 270494), (4, 135247), (7, 77284), (14, 38642), (28, 19321), (139, 3892), (278, 1946), (556, 973)]