20431705

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1493}}^1$

素因数の和:1545

約数の個数: 32

約数和(自身を含む): 30979584

約数和(自身を除く): 10547879

約数列:

[1, 5, 7, 17, 23, 35, 85, 115, 119, 161, 391, 595, 805, 1493, 1955, 2737, 7465, 10451, 13685, 25381, 34339, 52255, 126905, 171695, 177667, 240373, 583763, 888335, 1201865, 2918815, 4086341, 20431705]

約数ペア:

[(1, 20431705), (5, 4086341), (7, 2918815), (17, 1201865), (23, 888335), (35, 583763), (85, 240373), (115, 177667), (119, 171695), (161, 126905), (391, 52255), (595, 34339), (805, 25381), (1493, 13685), (1955, 10451), (2737, 7465)]