21901708

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{1609}}^1$

素因数の和:1737

約数の個数: 24

約数和(自身を含む): 39760560

約数和(自身を除く): 17858852

約数列:

[1, 2, 4, 41, 82, 83, 164, 166, 332, 1609, 3218, 3403, 6436, 6806, 13612, 65969, 131938, 133547, 263876, 267094, 534188, 5475427, 10950854, 21901708]

約数ペア:

[(1, 21901708), (2, 10950854), (4, 5475427), (41, 534188), (82, 267094), (83, 263876), (164, 133547), (166, 131938), (332, 65969), (1609, 13612), (3218, 6806), (3403, 6436)]