21981146

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43441}}^1$

素因数の和:43477

約数の個数: 16

約数和(自身を含む): 37533888

約数和(自身を除く): 15552742

約数列:

[1, 2, 11, 22, 23, 46, 253, 506, 43441, 86882, 477851, 955702, 999143, 1998286, 10990573, 21981146]

約数ペア:

[(1, 21981146), (2, 10990573), (11, 1998286), (22, 999143), (23, 955702), (46, 477851), (253, 86882), (506, 43441)]