21840236

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{3571}}^1$

素因数の和:3725

約数の個数: 24

約数和(自身を含む): 42006720

約数和(自身を除く): 20166484

約数列:

[1, 2, 4, 11, 22, 44, 139, 278, 556, 1529, 3058, 3571, 6116, 7142, 14284, 39281, 78562, 157124, 496369, 992738, 1985476, 5460059, 10920118, 21840236]

約数ペア:

[(1, 21840236), (2, 10920118), (4, 5460059), (11, 1985476), (22, 992738), (44, 496369), (139, 157124), (278, 78562), (556, 39281), (1529, 14284), (3058, 7142), (3571, 6116)]