20488916

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^2\times {\mathrm{2027}}^1$

素因数の和:2076

約数の個数: 36

約数和(自身を含む): 43269408

約数和(自身を除く): 22780492

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 361, 532, 722, 1444, 2027, 2527, 4054, 5054, 8108, 10108, 14189, 28378, 38513, 56756, 77026, 154052, 269591, 539182, 731747, 1078364, 1463494, 2926988, 5122229, 10244458, 20488916]

約数ペア:

[(1, 20488916), (2, 10244458), (4, 5122229), (7, 2926988), (14, 1463494), (19, 1078364), (28, 731747), (38, 539182), (76, 269591), (133, 154052), (266, 77026), (361, 56756), (532, 38513), (722, 28378), (1444, 14189), (2027, 10108), (2527, 8108), (4054, 5054)]