20672820

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{1823}}^1$

素因数の和:1851

約数の個数: 120

約数和(自身を含む): 74156544

約数和(自身を除く): 53483724

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 81, 84, 90, 105, 108, 126, 135, 140, 162, 180, 189, 210, 252, 270, 315, 324, 378, 405, 420, 540, 567, 630, 756, 810, 945, 1134, 1260, 1620, 1823, 1890, 2268, 2835, 3646, 3780, 5469, 5670, 7292, 9115, 10938, 11340, 12761, 16407, 18230, 21876, 25522, 27345, 32814, 36460, 38283, 49221, 51044, 54690, 63805, 65628, 76566, 82035, 98442, 109380, 114849, 127610, 147663, 153132, 164070, 191415, 196884, 229698, 246105, 255220, 295326, 328140, 344547, 382830, 459396, 492210, 574245, 590652, 689094, 738315, 765660, 984420, 1033641, 1148490, 1378188, 1476630, 1722735, 2067282, 2296980, 2953260, 3445470, 4134564, 5168205, 6890940, 10336410, 20672820]

約数ペア:

[(1, 20672820), (2, 10336410), (3, 6890940), (4, 5168205), (5, 4134564), (6, 3445470), (7, 2953260), (9, 2296980), (10, 2067282), (12, 1722735), (14, 1476630), (15, 1378188), (18, 1148490), (20, 1033641), (21, 984420), (27, 765660), (28, 738315), (30, 689094), (35, 590652), (36, 574245), (42, 492210), (45, 459396), (54, 382830), (60, 344547), (63, 328140), (70, 295326), (81, 255220), (84, 246105), (90, 229698), (105, 196884), (108, 191415), (126, 164070), (135, 153132), (140, 147663), (162, 127610), (180, 114849), (189, 109380), (210, 98442), (252, 82035), (270, 76566), (315, 65628), (324, 63805), (378, 54690), (405, 51044), (420, 49221), (540, 38283), (567, 36460), (630, 32814), (756, 27345), (810, 25522), (945, 21876), (1134, 18230), (1260, 16407), (1620, 12761), (1823, 11340), (1890, 10938), (2268, 9115), (2835, 7292), (3646, 5670), (3780, 5469)]