40540180

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{20897}}^1$

素因数の和:21003

約数の個数: 24

約数和(自身を含む): 86016168

約数和(自身を除く): 45475988

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 20897, 41794, 83588, 104485, 208970, 417940, 2027009, 4054018, 8108036, 10135045, 20270090, 40540180]

約数ペア:

[(1, 40540180), (2, 20270090), (4, 10135045), (5, 8108036), (10, 4054018), (20, 2027009), (97, 417940), (194, 208970), (388, 104485), (485, 83588), (970, 41794), (1940, 20897)]