71808779.000000000

素因数分解:

$2^7\times 5^3\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:217

約数の個数: 128

約数和(自身を含む): 350064000

約数和(自身を除く): 212288000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 79, 80, 100, 109, 125, 128, 158, 160, 200, 218, 250, 316, 320, 395, 400, 436, 500, 545, 632, 640, 790, 800, 872, 1000, 1090, 1264, 1580, 1600, 1744, 1975, 2000, 2180, 2528, 2725, 3160, 3200, 3488, 3950, 4000, 4360, 5056, 5450, 6320, 6976, 7900, 8000, 8611, 8720, 9875, 10112, 10900, 12640, 13625, 13952, 15800, 16000, 17222, 17440, 19750, 21800, 25280, 27250, 31600, 34444, 34880, 39500, 43055, 43600, 50560, 54500, 63200, 68888, 69760, 79000, 86110, 87200, 109000, 126400, 137776, 158000, 172220, 174400, 215275, 218000, 252800, 275552, 316000, 344440, 348800, 430550, 436000, 551104, 632000, 688880, 861100, 872000, 1076375, 1102208, 1264000, 1377760, 1722200, 1744000, 2152750, 2755520, 3444400, 4305500, 5511040, 6888800, 8611000, 13777600, 17222000, 27555200, 34444000, 68888000, 137776000]

約数ペア:

[(1, 137776000), (2, 68888000), (4, 34444000), (5, 27555200), (8, 17222000), (10, 13777600), (16, 8611000), (20, 6888800), (25, 5511040), (32, 4305500), (40, 3444400), (50, 2755520), (64, 2152750), (79, 1744000), (80, 1722200), (100, 1377760), (109, 1264000), (125, 1102208), (128, 1076375), (158, 872000), (160, 861100), (200, 688880), (218, 632000), (250, 551104), (316, 436000), (320, 430550), (395, 348800), (400, 344440), (436, 316000), (500, 275552), (545, 252800), (632, 218000), (640, 215275), (790, 174400), (800, 172220), (872, 158000), (1000, 137776), (1090, 126400), (1264, 109000), (1580, 87200), (1600, 86110), (1744, 79000), (1975, 69760), (2000, 68888), (2180, 63200), (2528, 54500), (2725, 50560), (3160, 43600), (3200, 43055), (3488, 39500), (3950, 34880), (4000, 34444), (4360, 31600), (5056, 27250), (5450, 25280), (6320, 21800), (6976, 19750), (7900, 17440), (8000, 17222), (8611, 16000), (8720, 15800), (9875, 13952), (10112, 13625), (10900, 12640)]