20346160

素因数分解:

$2^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{1291}}^1$

素因数の和:1501

約数の個数: 40

約数和(自身を含む): 47581776

約数和(自身を除く): 27235616

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197, 394, 788, 985, 1291, 1576, 1970, 2582, 3152, 3940, 5164, 6455, 7880, 10328, 12910, 15760, 20656, 25820, 51640, 103280, 254327, 508654, 1017308, 1271635, 2034616, 2543270, 4069232, 5086540, 10173080, 20346160]

約数ペア:

[(1, 20346160), (2, 10173080), (4, 5086540), (5, 4069232), (8, 2543270), (10, 2034616), (16, 1271635), (20, 1017308), (40, 508654), (80, 254327), (197, 103280), (394, 51640), (788, 25820), (985, 20656), (1291, 15760), (1576, 12910), (1970, 10328), (2582, 7880), (3152, 6455), (3940, 5164)]