21561716

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{44549}}^1$

素因数の和:44575

約数の個数: 18

約数和(自身を含む): 41476050

約数和(自身を除く): 19914334

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 44549, 89098, 178196, 490039, 980078, 1960156, 5390429, 10780858, 21561716]

約数ペア:

[(1, 21561716), (2, 10780858), (4, 5390429), (11, 1960156), (22, 980078), (44, 490039), (121, 178196), (242, 89098), (484, 44549)]