20199494420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{20611729}}^1$

素因数の和:20611752

約数の個数: 36

約数和(自身を含む): 49344481620

約数和(自身を除く): 29144987200

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 20611729, 41223458, 82446916, 103058645, 144282103, 206117290, 288564206, 412234580, 577128412, 721410515, 1009974721, 1442821030, 2019949442, 2885642060, 4039898884, 5049873605, 10099747210, 20199494420]

約数ペア:

[(1, 20199494420), (2, 10099747210), (4, 5049873605), (5, 4039898884), (7, 2885642060), (10, 2019949442), (14, 1442821030), (20, 1009974721), (28, 721410515), (35, 577128412), (49, 412234580), (70, 288564206), (98, 206117290), (140, 144282103), (196, 103058645), (245, 82446916), (490, 41223458), (980, 20611729)]