20815620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{1709}}^1$

素因数の和:1757

約数の個数: 96

約数和(自身を含む): 68947200

約数和(自身を除く): 48131580

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 29, 30, 35, 42, 58, 60, 70, 84, 87, 105, 116, 140, 145, 174, 203, 210, 290, 348, 406, 420, 435, 580, 609, 812, 870, 1015, 1218, 1709, 1740, 2030, 2436, 3045, 3418, 4060, 5127, 6090, 6836, 8545, 10254, 11963, 12180, 17090, 20508, 23926, 25635, 34180, 35889, 47852, 49561, 51270, 59815, 71778, 99122, 102540, 119630, 143556, 148683, 179445, 198244, 239260, 247805, 297366, 346927, 358890, 495610, 594732, 693854, 717780, 743415, 991220, 1040781, 1387708, 1486830, 1734635, 2081562, 2973660, 3469270, 4163124, 5203905, 6938540, 10407810, 20815620]

約数ペア:

[(1, 20815620), (2, 10407810), (3, 6938540), (4, 5203905), (5, 4163124), (6, 3469270), (7, 2973660), (10, 2081562), (12, 1734635), (14, 1486830), (15, 1387708), (20, 1040781), (21, 991220), (28, 743415), (29, 717780), (30, 693854), (35, 594732), (42, 495610), (58, 358890), (60, 346927), (70, 297366), (84, 247805), (87, 239260), (105, 198244), (116, 179445), (140, 148683), (145, 143556), (174, 119630), (203, 102540), (210, 99122), (290, 71778), (348, 59815), (406, 51270), (420, 49561), (435, 47852), (580, 35889), (609, 34180), (812, 25635), (870, 23926), (1015, 20508), (1218, 17090), (1709, 12180), (1740, 11963), (2030, 10254), (2436, 8545), (3045, 6836), (3418, 6090), (4060, 5127)]