21393960

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{25469}}^1$

素因数の和:25490

約数の個数: 64

約数和(自身を含む): 73353600

約数和(自身を除く): 51959640

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 25469, 50938, 76407, 101876, 127345, 152814, 178283, 203752, 254690, 305628, 356566, 382035, 509380, 534849, 611256, 713132, 764070, 891415, 1018760, 1069698, 1426264, 1528140, 1782830, 2139396, 2674245, 3056280, 3565660, 4278792, 5348490, 7131320, 10696980, 21393960]

約数ペア:

[(1, 21393960), (2, 10696980), (3, 7131320), (4, 5348490), (5, 4278792), (6, 3565660), (7, 3056280), (8, 2674245), (10, 2139396), (12, 1782830), (14, 1528140), (15, 1426264), (20, 1069698), (21, 1018760), (24, 891415), (28, 764070), (30, 713132), (35, 611256), (40, 534849), (42, 509380), (56, 382035), (60, 356566), (70, 305628), (84, 254690), (105, 203752), (120, 178283), (140, 152814), (168, 127345), (210, 101876), (280, 76407), (420, 50938), (840, 25469)]