21285104

素因数分解:

$2^4\times {\mathrm{541}}^1\times {\mathrm{2459}}^1$

素因数の和:3008

約数の個数: 20

約数和(自身を含む): 41332920

約数和(自身を除く): 20047816

約数列:

[1, 2, 4, 8, 16, 541, 1082, 2164, 2459, 4328, 4918, 8656, 9836, 19672, 39344, 1330319, 2660638, 5321276, 10642552, 21285104]

約数ペア:

[(1, 21285104), (2, 10642552), (4, 5321276), (8, 2660638), (16, 1330319), (541, 39344), (1082, 19672), (2164, 9836), (2459, 8656), (4328, 4918)]