281969920

素因数分解:

$2^8\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:220

約数の個数: 144

約数和(自身を含む): 712293120

約数和(自身を除く): 430323200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 47, 64, 80, 86, 94, 109, 128, 160, 172, 188, 215, 218, 235, 256, 320, 344, 376, 430, 436, 470, 545, 640, 688, 752, 860, 872, 940, 1090, 1280, 1376, 1504, 1720, 1744, 1880, 2021, 2180, 2752, 3008, 3440, 3488, 3760, 4042, 4360, 4687, 5123, 5504, 6016, 6880, 6976, 7520, 8084, 8720, 9374, 10105, 10246, 11008, 12032, 13760, 13952, 15040, 16168, 17440, 18748, 20210, 20492, 23435, 25615, 27520, 27904, 30080, 32336, 34880, 37496, 40420, 40984, 46870, 51230, 55040, 60160, 64672, 69760, 74992, 80840, 81968, 93740, 102460, 129344, 139520, 149984, 161680, 163936, 187480, 204920, 220289, 258688, 299968, 323360, 327872, 374960, 409840, 440578, 517376, 599936, 646720, 655744, 749920, 819680, 881156, 1101445, 1199872, 1293440, 1311488, 1499840, 1639360, 1762312, 2202890, 2586880, 2999680, 3278720, 3524624, 4405780, 5999360, 6557440, 7049248, 8811560, 14098496, 17623120, 28196992, 35246240, 56393984, 70492480, 140984960, 281969920]

約数ペア:

[(1, 281969920), (2, 140984960), (4, 70492480), (5, 56393984), (8, 35246240), (10, 28196992), (16, 17623120), (20, 14098496), (32, 8811560), (40, 7049248), (43, 6557440), (47, 5999360), (64, 4405780), (80, 3524624), (86, 3278720), (94, 2999680), (109, 2586880), (128, 2202890), (160, 1762312), (172, 1639360), (188, 1499840), (215, 1311488), (218, 1293440), (235, 1199872), (256, 1101445), (320, 881156), (344, 819680), (376, 749920), (430, 655744), (436, 646720), (470, 599936), (545, 517376), (640, 440578), (688, 409840), (752, 374960), (860, 327872), (872, 323360), (940, 299968), (1090, 258688), (1280, 220289), (1376, 204920), (1504, 187480), (1720, 163936), (1744, 161680), (1880, 149984), (2021, 139520), (2180, 129344), (2752, 102460), (3008, 93740), (3440, 81968), (3488, 80840), (3760, 74992), (4042, 69760), (4360, 64672), (4687, 60160), (5123, 55040), (5504, 51230), (6016, 46870), (6880, 40984), (6976, 40420), (7520, 37496), (8084, 34880), (8720, 32336), (9374, 30080), (10105, 27904), (10246, 27520), (11008, 25615), (12032, 23435), (13760, 20492), (13952, 20210), (15040, 18748), (16168, 17440)]