80437480

素因数分解:

$2^3\times 5^1\times {\mathrm{1009}}^1\times {\mathrm{1993}}^1$

素因数の和:3013

約数の個数: 32

約数和(自身を含む): 181254600

約数和(自身を除く): 100817120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1009, 1993, 2018, 3986, 4036, 5045, 7972, 8072, 9965, 10090, 15944, 19930, 20180, 39860, 40360, 79720, 2010937, 4021874, 8043748, 10054685, 16087496, 20109370, 40218740, 80437480]

約数ペア:

[(1, 80437480), (2, 40218740), (4, 20109370), (5, 16087496), (8, 10054685), (10, 8043748), (20, 4021874), (40, 2010937), (1009, 79720), (1993, 40360), (2018, 39860), (3986, 20180), (4036, 19930), (5045, 15944), (7972, 10090), (8072, 9965)]