21090760

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{27751}}^1$

素因数の和:27781

約数の個数: 32

約数和(自身を含む): 49953600

約数和(自身を除く): 28862840

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 27751, 55502, 111004, 138755, 222008, 277510, 527269, 555020, 1054538, 1110040, 2109076, 2636345, 4218152, 5272690, 10545380, 21090760]

約数ペア:

[(1, 21090760), (2, 10545380), (4, 5272690), (5, 4218152), (8, 2636345), (10, 2109076), (19, 1110040), (20, 1054538), (38, 555020), (40, 527269), (76, 277510), (95, 222008), (152, 138755), (190, 111004), (380, 55502), (760, 27751)]