20516500

素因数分解:

$2^2\times 5^3\times {\mathrm{37}}^1\times {\mathrm{1109}}^1$

素因数の和:1165

約数の個数: 48

約数和(自身を含む): 46060560

約数和(自身を除く): 25544060

約数列:

[1, 2, 4, 5, 10, 20, 25, 37, 50, 74, 100, 125, 148, 185, 250, 370, 500, 740, 925, 1109, 1850, 2218, 3700, 4436, 4625, 5545, 9250, 11090, 18500, 22180, 27725, 41033, 55450, 82066, 110900, 138625, 164132, 205165, 277250, 410330, 554500, 820660, 1025825, 2051650, 4103300, 5129125, 10258250, 20516500]

約数ペア:

[(1, 20516500), (2, 10258250), (4, 5129125), (5, 4103300), (10, 2051650), (20, 1025825), (25, 820660), (37, 554500), (50, 410330), (74, 277250), (100, 205165), (125, 164132), (148, 138625), (185, 110900), (250, 82066), (370, 55450), (500, 41033), (740, 27725), (925, 22180), (1109, 18500), (1850, 11090), (2218, 9250), (3700, 5545), (4436, 4625)]