78810400

素因数分解:

$2^5\times 5^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:171

約数の個数: 144

約数和(自身を含む): 206236800

約数和(自身を除く): 127426400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 29, 32, 40, 43, 50, 58, 79, 80, 86, 100, 116, 145, 158, 160, 172, 200, 215, 232, 290, 316, 344, 395, 400, 430, 464, 580, 632, 688, 725, 790, 800, 860, 928, 1075, 1160, 1247, 1264, 1376, 1450, 1580, 1720, 1975, 2150, 2291, 2320, 2494, 2528, 2900, 3160, 3397, 3440, 3950, 4300, 4582, 4640, 4988, 5800, 6235, 6320, 6794, 6880, 7900, 8600, 9164, 9976, 11455, 11600, 12470, 12640, 13588, 15800, 16985, 17200, 18328, 19952, 22910, 23200, 24940, 27176, 31175, 31600, 33970, 34400, 36656, 39904, 45820, 49880, 54352, 57275, 62350, 63200, 67940, 73312, 84925, 91640, 98513, 99760, 108704, 114550, 124700, 135880, 169850, 183280, 197026, 199520, 229100, 249400, 271760, 339700, 366560, 394052, 458200, 492565, 498800, 543520, 679400, 788104, 916400, 985130, 997600, 1358800, 1576208, 1832800, 1970260, 2462825, 2717600, 3152416, 3940520, 4925650, 7881040, 9851300, 15762080, 19702600, 39405200, 78810400]

約数ペア:

[(1, 78810400), (2, 39405200), (4, 19702600), (5, 15762080), (8, 9851300), (10, 7881040), (16, 4925650), (20, 3940520), (25, 3152416), (29, 2717600), (32, 2462825), (40, 1970260), (43, 1832800), (50, 1576208), (58, 1358800), (79, 997600), (80, 985130), (86, 916400), (100, 788104), (116, 679400), (145, 543520), (158, 498800), (160, 492565), (172, 458200), (200, 394052), (215, 366560), (232, 339700), (290, 271760), (316, 249400), (344, 229100), (395, 199520), (400, 197026), (430, 183280), (464, 169850), (580, 135880), (632, 124700), (688, 114550), (725, 108704), (790, 99760), (800, 98513), (860, 91640), (928, 84925), (1075, 73312), (1160, 67940), (1247, 63200), (1264, 62350), (1376, 57275), (1450, 54352), (1580, 49880), (1720, 45820), (1975, 39904), (2150, 36656), (2291, 34400), (2320, 33970), (2494, 31600), (2528, 31175), (2900, 27176), (3160, 24940), (3397, 23200), (3440, 22910), (3950, 19952), (4300, 18328), (4582, 17200), (4640, 16985), (4988, 15800), (5800, 13588), (6235, 12640), (6320, 12470), (6794, 11600), (6880, 11455), (7900, 9976), (8600, 9164)]