71380000

素因数分解:

$2^5\times 5^4\times {\mathrm{43}}^1\times {\mathrm{83}}^1$

素因数の和:156

約数の個数: 120

約数和(自身を含む): 181854288

約数和(自身を除く): 110474288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 43, 50, 80, 83, 86, 100, 125, 160, 166, 172, 200, 215, 250, 332, 344, 400, 415, 430, 500, 625, 664, 688, 800, 830, 860, 1000, 1075, 1250, 1328, 1376, 1660, 1720, 2000, 2075, 2150, 2500, 2656, 3320, 3440, 3569, 4000, 4150, 4300, 5000, 5375, 6640, 6880, 7138, 8300, 8600, 10000, 10375, 10750, 13280, 14276, 16600, 17200, 17845, 20000, 20750, 21500, 26875, 28552, 33200, 34400, 35690, 41500, 43000, 51875, 53750, 57104, 66400, 71380, 83000, 86000, 89225, 103750, 107500, 114208, 142760, 166000, 172000, 178450, 207500, 215000, 285520, 332000, 356900, 415000, 430000, 446125, 571040, 713800, 830000, 860000, 892250, 1427600, 1660000, 1784500, 2230625, 2855200, 3569000, 4461250, 7138000, 8922500, 14276000, 17845000, 35690000, 71380000]

約数ペア:

[(1, 71380000), (2, 35690000), (4, 17845000), (5, 14276000), (8, 8922500), (10, 7138000), (16, 4461250), (20, 3569000), (25, 2855200), (32, 2230625), (40, 1784500), (43, 1660000), (50, 1427600), (80, 892250), (83, 860000), (86, 830000), (100, 713800), (125, 571040), (160, 446125), (166, 430000), (172, 415000), (200, 356900), (215, 332000), (250, 285520), (332, 215000), (344, 207500), (400, 178450), (415, 172000), (430, 166000), (500, 142760), (625, 114208), (664, 107500), (688, 103750), (800, 89225), (830, 86000), (860, 83000), (1000, 71380), (1075, 66400), (1250, 57104), (1328, 53750), (1376, 51875), (1660, 43000), (1720, 41500), (2000, 35690), (2075, 34400), (2150, 33200), (2500, 28552), (2656, 26875), (3320, 21500), (3440, 20750), (3569, 20000), (4000, 17845), (4150, 17200), (4300, 16600), (5000, 14276), (5375, 13280), (6640, 10750), (6880, 10375), (7138, 10000), (8300, 8600)]