19520620

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19919}}^1$

素因数の和:19942

約数の個数: 36

約数和(自身を含む): 47688480

約数和(自身を除く): 28167860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 19919, 39838, 79676, 99595, 139433, 199190, 278866, 398380, 557732, 697165, 976031, 1394330, 1952062, 2788660, 3904124, 4880155, 9760310, 19520620]

約数ペア:

[(1, 19520620), (2, 9760310), (4, 4880155), (5, 3904124), (7, 2788660), (10, 1952062), (14, 1394330), (20, 976031), (28, 697165), (35, 557732), (49, 398380), (70, 278866), (98, 199190), (140, 139433), (196, 99595), (245, 79676), (490, 39838), (980, 19919)]