21919972

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{977}}^1$

素因数の和:1131

約数の個数: 24

約数和(自身を含む): 39432960

約数和(自身を除く): 17512988

約数列:

[1, 2, 4, 71, 79, 142, 158, 284, 316, 977, 1954, 3908, 5609, 11218, 22436, 69367, 77183, 138734, 154366, 277468, 308732, 5479993, 10959986, 21919972]

約数ペア:

[(1, 21919972), (2, 10959986), (4, 5479993), (71, 308732), (79, 277468), (142, 154366), (158, 138734), (284, 77183), (316, 69367), (977, 22436), (1954, 11218), (3908, 5609)]