20927200

素因数分解:

$2^5\times 5^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1$

素因数の和:165

約数の個数: 144

約数和(自身を含む): 60558624

約数和(自身を除く): 39631424

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 37, 40, 50, 56, 70, 74, 80, 100, 101, 112, 140, 148, 160, 175, 185, 200, 202, 224, 259, 280, 296, 350, 370, 400, 404, 505, 518, 560, 592, 700, 707, 740, 800, 808, 925, 1010, 1036, 1120, 1184, 1295, 1400, 1414, 1480, 1616, 1850, 2020, 2072, 2525, 2590, 2800, 2828, 2960, 3232, 3535, 3700, 3737, 4040, 4144, 5050, 5180, 5600, 5656, 5920, 6475, 7070, 7400, 7474, 8080, 8288, 10100, 10360, 11312, 12950, 14140, 14800, 14948, 16160, 17675, 18685, 20200, 20720, 22624, 25900, 26159, 28280, 29600, 29896, 35350, 37370, 40400, 41440, 51800, 52318, 56560, 59792, 70700, 74740, 80800, 93425, 103600, 104636, 113120, 119584, 130795, 141400, 149480, 186850, 207200, 209272, 261590, 282800, 298960, 373700, 418544, 523180, 565600, 597920, 653975, 747400, 837088, 1046360, 1307950, 1494800, 2092720, 2615900, 2989600, 4185440, 5231800, 10463600, 20927200]

約数ペア:

[(1, 20927200), (2, 10463600), (4, 5231800), (5, 4185440), (7, 2989600), (8, 2615900), (10, 2092720), (14, 1494800), (16, 1307950), (20, 1046360), (25, 837088), (28, 747400), (32, 653975), (35, 597920), (37, 565600), (40, 523180), (50, 418544), (56, 373700), (70, 298960), (74, 282800), (80, 261590), (100, 209272), (101, 207200), (112, 186850), (140, 149480), (148, 141400), (160, 130795), (175, 119584), (185, 113120), (200, 104636), (202, 103600), (224, 93425), (259, 80800), (280, 74740), (296, 70700), (350, 59792), (370, 56560), (400, 52318), (404, 51800), (505, 41440), (518, 40400), (560, 37370), (592, 35350), (700, 29896), (707, 29600), (740, 28280), (800, 26159), (808, 25900), (925, 22624), (1010, 20720), (1036, 20200), (1120, 18685), (1184, 17675), (1295, 16160), (1400, 14948), (1414, 14800), (1480, 14140), (1616, 12950), (1850, 11312), (2020, 10360), (2072, 10100), (2525, 8288), (2590, 8080), (2800, 7474), (2828, 7400), (2960, 7070), (3232, 6475), (3535, 5920), (3700, 5656), (3737, 5600), (4040, 5180), (4144, 5050)]