25585980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{60919}}^1$

素因数の和:60938

約数の個数: 48

約数和(自身を含む): 81876480

約数和(自身を除く): 56290500

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 60919, 121838, 182757, 243676, 304595, 365514, 426433, 609190, 731028, 852866, 913785, 1218380, 1279299, 1705732, 1827570, 2132165, 2558598, 3655140, 4264330, 5117196, 6396495, 8528660, 12792990, 25585980]

約数ペア:

[(1, 25585980), (2, 12792990), (3, 8528660), (4, 6396495), (5, 5117196), (6, 4264330), (7, 3655140), (10, 2558598), (12, 2132165), (14, 1827570), (15, 1705732), (20, 1279299), (21, 1218380), (28, 913785), (30, 852866), (35, 731028), (42, 609190), (60, 426433), (70, 365514), (84, 304595), (105, 243676), (140, 182757), (210, 121838), (420, 60919)]