20465284

素因数分解:

$2^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{10909}}^1$

素因数の和:10987

約数の個数: 24

約数和(自身を含む): 41545280

約数和(自身を除く): 21079996

約数列:

[1, 2, 4, 7, 14, 28, 67, 134, 268, 469, 938, 1876, 10909, 21818, 43636, 76363, 152726, 305452, 730903, 1461806, 2923612, 5116321, 10232642, 20465284]

約数ペア:

[(1, 20465284), (2, 10232642), (4, 5116321), (7, 2923612), (14, 1461806), (28, 730903), (67, 305452), (134, 152726), (268, 76363), (469, 43636), (938, 21818), (1876, 10909)]