81254740

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{82913}}^1$

素因数の和:82936

約数の個数: 36

約数和(自身を含む): 198496116

約数和(自身を除く): 117241376

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 82913, 165826, 331652, 414565, 580391, 829130, 1160782, 1658260, 2321564, 2901955, 4062737, 5803910, 8125474, 11607820, 16250948, 20313685, 40627370, 81254740]

約数ペア:

[(1, 81254740), (2, 40627370), (4, 20313685), (5, 16250948), (7, 11607820), (10, 8125474), (14, 5803910), (20, 4062737), (28, 2901955), (35, 2321564), (49, 1658260), (70, 1160782), (98, 829130), (140, 580391), (196, 414565), (245, 331652), (490, 165826), (980, 82913)]