20656120

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{17807}}^1$

素因数の和:17847

約数の個数: 32

約数和(自身を含む): 48081600

約数和(自身を除く): 27425480

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 17807, 35614, 71228, 89035, 142456, 178070, 356140, 516403, 712280, 1032806, 2065612, 2582015, 4131224, 5164030, 10328060, 20656120]

約数ペア:

[(1, 20656120), (2, 10328060), (4, 5164030), (5, 4131224), (8, 2582015), (10, 2065612), (20, 1032806), (29, 712280), (40, 516403), (58, 356140), (116, 178070), (145, 142456), (232, 89035), (290, 71228), (580, 35614), (1160, 17807)]