21049912

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{202403}}^1$

素因数の和:202422

約数の個数: 16

約数和(自身を含む): 42504840

約数和(自身を除く): 21454928

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 202403, 404806, 809612, 1619224, 2631239, 5262478, 10524956, 21049912]

約数ペア:

[(1, 21049912), (2, 10524956), (4, 5262478), (8, 2631239), (13, 1619224), (26, 809612), (52, 404806), (104, 202403)]