20989080

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{8329}}^1$

素因数の和:8353

約数の個数: 96

約数和(自身を含む): 77968800

約数和(自身を除く): 56979720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 63, 70, 72, 84, 90, 105, 120, 126, 140, 168, 180, 210, 252, 280, 315, 360, 420, 504, 630, 840, 1260, 2520, 8329, 16658, 24987, 33316, 41645, 49974, 58303, 66632, 74961, 83290, 99948, 116606, 124935, 149922, 166580, 174909, 199896, 233212, 249870, 291515, 299844, 333160, 349818, 374805, 466424, 499740, 524727, 583030, 599688, 699636, 749610, 874545, 999480, 1049454, 1166060, 1399272, 1499220, 1749090, 2098908, 2332120, 2623635, 2998440, 3498180, 4197816, 5247270, 6996360, 10494540, 20989080]

約数ペア:

[(1, 20989080), (2, 10494540), (3, 6996360), (4, 5247270), (5, 4197816), (6, 3498180), (7, 2998440), (8, 2623635), (9, 2332120), (10, 2098908), (12, 1749090), (14, 1499220), (15, 1399272), (18, 1166060), (20, 1049454), (21, 999480), (24, 874545), (28, 749610), (30, 699636), (35, 599688), (36, 583030), (40, 524727), (42, 499740), (45, 466424), (56, 374805), (60, 349818), (63, 333160), (70, 299844), (72, 291515), (84, 249870), (90, 233212), (105, 199896), (120, 174909), (126, 166580), (140, 149922), (168, 124935), (180, 116606), (210, 99948), (252, 83290), (280, 74961), (315, 66632), (360, 58303), (420, 49974), (504, 41645), (630, 33316), (840, 24987), (1260, 16658), (2520, 8329)]