20513888

素因数分解:

$2^5\times {\mathrm{71}}^1\times {\mathrm{9029}}^1$

素因数の和:9110

約数の個数: 24

約数和(自身を含む): 40960080

約数和(自身を除く): 20446192

約数列:

[1, 2, 4, 8, 16, 32, 71, 142, 284, 568, 1136, 2272, 9029, 18058, 36116, 72232, 144464, 288928, 641059, 1282118, 2564236, 5128472, 10256944, 20513888]

約数ペア:

[(1, 20513888), (2, 10256944), (4, 5128472), (8, 2564236), (16, 1282118), (32, 641059), (71, 288928), (142, 144464), (284, 72232), (568, 36116), (1136, 18058), (2272, 9029)]