20611620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2663}}^1$

素因数の和:2721

約数の個数: 72

約数和(自身を含む): 63999936

約数和(自身を除く): 43388316

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 43, 45, 60, 86, 90, 129, 172, 180, 215, 258, 387, 430, 516, 645, 774, 860, 1290, 1548, 1935, 2580, 2663, 3870, 5326, 7740, 7989, 10652, 13315, 15978, 23967, 26630, 31956, 39945, 47934, 53260, 79890, 95868, 114509, 119835, 159780, 229018, 239670, 343527, 458036, 479340, 572545, 687054, 1030581, 1145090, 1374108, 1717635, 2061162, 2290180, 3435270, 4122324, 5152905, 6870540, 10305810, 20611620]

約数ペア:

[(1, 20611620), (2, 10305810), (3, 6870540), (4, 5152905), (5, 4122324), (6, 3435270), (9, 2290180), (10, 2061162), (12, 1717635), (15, 1374108), (18, 1145090), (20, 1030581), (30, 687054), (36, 572545), (43, 479340), (45, 458036), (60, 343527), (86, 239670), (90, 229018), (129, 159780), (172, 119835), (180, 114509), (215, 95868), (258, 79890), (387, 53260), (430, 47934), (516, 39945), (645, 31956), (774, 26630), (860, 23967), (1290, 15978), (1548, 13315), (1935, 10652), (2580, 7989), (2663, 7740), (3870, 5326)]