21200444

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{257}}^1\times {\mathrm{503}}^1$

素因数の和:805

約数の個数: 24

約数和(自身を含む): 38229408

約数和(自身を除く): 17028964

約数列:

[1, 2, 4, 41, 82, 164, 257, 503, 514, 1006, 1028, 2012, 10537, 20623, 21074, 41246, 42148, 82492, 129271, 258542, 517084, 5300111, 10600222, 21200444]

約数ペア:

[(1, 21200444), (2, 10600222), (4, 5300111), (41, 517084), (82, 258542), (164, 129271), (257, 82492), (503, 42148), (514, 41246), (1006, 21074), (1028, 20623), (2012, 10537)]