20657860

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{35617}}^1$

素因数の和:35655

約数の個数: 24

約数和(自身を含む): 44878680

約数和(自身を除く): 24220820

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 35617, 71234, 142468, 178085, 356170, 712340, 1032893, 2065786, 4131572, 5164465, 10328930, 20657860]

約数ペア:

[(1, 20657860), (2, 10328930), (4, 5164465), (5, 4131572), (10, 2065786), (20, 1032893), (29, 712340), (58, 356170), (116, 178085), (145, 142468), (290, 71234), (580, 35617)]