21478864

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{122039}}^1$

素因数の和:122058

約数の個数: 20

約数和(自身を含む): 45398880

約数和(自身を除く): 23920016

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 122039, 244078, 488156, 976312, 1342429, 1952624, 2684858, 5369716, 10739432, 21478864]

約数ペア:

[(1, 21478864), (2, 10739432), (4, 5369716), (8, 2684858), (11, 1952624), (16, 1342429), (22, 976312), (44, 488156), (88, 244078), (176, 122039)]