18540620

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{18919}}^1$

素因数の和:18942

約数の個数: 36

約数和(自身を含む): 45294480

約数和(自身を除く): 26753860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 18919, 37838, 75676, 94595, 132433, 189190, 264866, 378380, 529732, 662165, 927031, 1324330, 1854062, 2648660, 3708124, 4635155, 9270310, 18540620]

約数ペア:

[(1, 18540620), (2, 9270310), (4, 4635155), (5, 3708124), (7, 2648660), (10, 1854062), (14, 1324330), (20, 927031), (28, 662165), (35, 529732), (49, 378380), (70, 264866), (98, 189190), (140, 132433), (196, 94595), (245, 75676), (490, 37838), (980, 18919)]