20758500

素因数分解:

$2^2\times 3^2\times 5^3\times 7^1\times {\mathrm{659}}^1$

素因数の和:691

約数の個数: 144

約数和(自身を含む): 74954880

約数和(自身を除く): 54196380

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 25, 28, 30, 35, 36, 42, 45, 50, 60, 63, 70, 75, 84, 90, 100, 105, 125, 126, 140, 150, 175, 180, 210, 225, 250, 252, 300, 315, 350, 375, 420, 450, 500, 525, 630, 659, 700, 750, 875, 900, 1050, 1125, 1260, 1318, 1500, 1575, 1750, 1977, 2100, 2250, 2625, 2636, 3150, 3295, 3500, 3954, 4500, 4613, 5250, 5931, 6300, 6590, 7875, 7908, 9226, 9885, 10500, 11862, 13180, 13839, 15750, 16475, 18452, 19770, 23065, 23724, 27678, 29655, 31500, 32950, 39540, 41517, 46130, 49425, 55356, 59310, 65900, 69195, 82375, 83034, 92260, 98850, 115325, 118620, 138390, 148275, 164750, 166068, 197700, 207585, 230650, 247125, 276780, 296550, 329500, 345975, 415170, 461300, 494250, 576625, 593100, 691950, 741375, 830340, 988500, 1037925, 1153250, 1383900, 1482750, 1729875, 2075850, 2306500, 2965500, 3459750, 4151700, 5189625, 6919500, 10379250, 20758500]

約数ペア:

[(1, 20758500), (2, 10379250), (3, 6919500), (4, 5189625), (5, 4151700), (6, 3459750), (7, 2965500), (9, 2306500), (10, 2075850), (12, 1729875), (14, 1482750), (15, 1383900), (18, 1153250), (20, 1037925), (21, 988500), (25, 830340), (28, 741375), (30, 691950), (35, 593100), (36, 576625), (42, 494250), (45, 461300), (50, 415170), (60, 345975), (63, 329500), (70, 296550), (75, 276780), (84, 247125), (90, 230650), (100, 207585), (105, 197700), (125, 166068), (126, 164750), (140, 148275), (150, 138390), (175, 118620), (180, 115325), (210, 98850), (225, 92260), (250, 83034), (252, 82375), (300, 69195), (315, 65900), (350, 59310), (375, 55356), (420, 49425), (450, 46130), (500, 41517), (525, 39540), (630, 32950), (659, 31500), (700, 29655), (750, 27678), (875, 23724), (900, 23065), (1050, 19770), (1125, 18452), (1260, 16475), (1318, 15750), (1500, 13839), (1575, 13180), (1750, 11862), (1977, 10500), (2100, 9885), (2250, 9226), (2625, 7908), (2636, 7875), (3150, 6590), (3295, 6300), (3500, 5931), (3954, 5250), (4500, 4613)]