19445780

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1\times {\mathrm{151}}^1$

素因数の和:344

約数の個数: 48

約数和(自身を含む): 42287616

約数和(自身を除く): 22841836

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 137, 151, 188, 235, 274, 302, 470, 548, 604, 685, 755, 940, 1370, 1510, 2740, 3020, 6439, 7097, 12878, 14194, 20687, 25756, 28388, 32195, 35485, 41374, 64390, 70970, 82748, 103435, 128780, 141940, 206870, 413740, 972289, 1944578, 3889156, 4861445, 9722890, 19445780]

約数ペア:

[(1, 19445780), (2, 9722890), (4, 4861445), (5, 3889156), (10, 1944578), (20, 972289), (47, 413740), (94, 206870), (137, 141940), (151, 128780), (188, 103435), (235, 82748), (274, 70970), (302, 64390), (470, 41374), (548, 35485), (604, 32195), (685, 28388), (755, 25756), (940, 20687), (1370, 14194), (1510, 12878), (2740, 7097), (3020, 6439)]