20998396

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{2099}}^1$

素因数の和:2205

約数の個数: 24

約数和(自身を含む): 38278800

約数和(自身を除く): 17280404

約数列:

[1, 2, 4, 41, 61, 82, 122, 164, 244, 2099, 2501, 4198, 5002, 8396, 10004, 86059, 128039, 172118, 256078, 344236, 512156, 5249599, 10499198, 20998396]

約数ペア:

[(1, 20998396), (2, 10499198), (4, 5249599), (41, 512156), (61, 344236), (82, 256078), (122, 172118), (164, 128039), (244, 86059), (2099, 10004), (2501, 8396), (4198, 5002)]