20688436

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{1249}}^1$

素因数の和:1395

約数の個数: 24

約数和(自身を含む): 37485000

約数和(自身を除く): 16796564

約数列:

[1, 2, 4, 41, 82, 101, 164, 202, 404, 1249, 2498, 4141, 4996, 8282, 16564, 51209, 102418, 126149, 204836, 252298, 504596, 5172109, 10344218, 20688436]

約数ペア:

[(1, 20688436), (2, 10344218), (4, 5172109), (41, 504596), (82, 252298), (101, 204836), (164, 126149), (202, 102418), (404, 51209), (1249, 16564), (2498, 8282), (4141, 4996)]