213428740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{389}}^1\times {\mathrm{3919}}^1$

素因数の和:4324

約数の個数: 48

約数和(自身を含む): 513676800

約数和(自身を除く): 300248060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 389, 778, 1556, 1945, 2723, 3890, 3919, 5446, 7780, 7838, 10892, 13615, 15676, 19595, 27230, 27433, 39190, 54460, 54866, 78380, 109732, 137165, 274330, 548660, 1524491, 3048982, 6097964, 7622455, 10671437, 15244910, 21342874, 30489820, 42685748, 53357185, 106714370, 213428740]

約数ペア:

[(1, 213428740), (2, 106714370), (4, 53357185), (5, 42685748), (7, 30489820), (10, 21342874), (14, 15244910), (20, 10671437), (28, 7622455), (35, 6097964), (70, 3048982), (140, 1524491), (389, 548660), (778, 274330), (1556, 137165), (1945, 109732), (2723, 78380), (3890, 54866), (3919, 54460), (5446, 39190), (7780, 27433), (7838, 27230), (10892, 19595), (13615, 15676)]