81046400

素因数分解:

$2^7\times 5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:117

約数の個数: 192

約数和(自身を含む): 222604800

約数和(自身を除く): 141558400

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 31, 32, 38, 40, 43, 50, 62, 64, 76, 80, 86, 95, 100, 124, 128, 152, 155, 160, 172, 190, 200, 215, 248, 304, 310, 320, 344, 380, 400, 430, 475, 496, 589, 608, 620, 640, 688, 760, 775, 800, 817, 860, 950, 992, 1075, 1178, 1216, 1240, 1333, 1376, 1520, 1550, 1600, 1634, 1720, 1900, 1984, 2150, 2356, 2432, 2480, 2666, 2752, 2945, 3040, 3100, 3200, 3268, 3440, 3800, 3968, 4085, 4300, 4712, 4960, 5332, 5504, 5890, 6080, 6200, 6536, 6665, 6880, 7600, 8170, 8600, 9424, 9920, 10664, 11780, 12160, 12400, 13072, 13330, 13760, 14725, 15200, 16340, 17200, 18848, 19840, 20425, 21328, 23560, 24800, 25327, 26144, 26660, 27520, 29450, 30400, 32680, 33325, 34400, 37696, 40850, 42656, 47120, 49600, 50654, 52288, 53320, 58900, 60800, 65360, 66650, 68800, 75392, 81700, 85312, 94240, 99200, 101308, 104576, 106640, 117800, 126635, 130720, 133300, 137600, 163400, 170624, 188480, 202616, 213280, 235600, 253270, 261440, 266600, 326800, 376960, 405232, 426560, 471200, 506540, 522880, 533200, 633175, 653600, 810464, 853120, 942400, 1013080, 1066400, 1266350, 1307200, 1620928, 1884800, 2026160, 2132800, 2532700, 2614400, 3241856, 4052320, 4265600, 5065400, 8104640, 10130800, 16209280, 20261600, 40523200, 81046400]

約数ペア:

[(1, 81046400), (2, 40523200), (4, 20261600), (5, 16209280), (8, 10130800), (10, 8104640), (16, 5065400), (19, 4265600), (20, 4052320), (25, 3241856), (31, 2614400), (32, 2532700), (38, 2132800), (40, 2026160), (43, 1884800), (50, 1620928), (62, 1307200), (64, 1266350), (76, 1066400), (80, 1013080), (86, 942400), (95, 853120), (100, 810464), (124, 653600), (128, 633175), (152, 533200), (155, 522880), (160, 506540), (172, 471200), (190, 426560), (200, 405232), (215, 376960), (248, 326800), (304, 266600), (310, 261440), (320, 253270), (344, 235600), (380, 213280), (400, 202616), (430, 188480), (475, 170624), (496, 163400), (589, 137600), (608, 133300), (620, 130720), (640, 126635), (688, 117800), (760, 106640), (775, 104576), (800, 101308), (817, 99200), (860, 94240), (950, 85312), (992, 81700), (1075, 75392), (1178, 68800), (1216, 66650), (1240, 65360), (1333, 60800), (1376, 58900), (1520, 53320), (1550, 52288), (1600, 50654), (1634, 49600), (1720, 47120), (1900, 42656), (1984, 40850), (2150, 37696), (2356, 34400), (2432, 33325), (2480, 32680), (2666, 30400), (2752, 29450), (2945, 27520), (3040, 26660), (3100, 26144), (3200, 25327), (3268, 24800), (3440, 23560), (3800, 21328), (3968, 20425), (4085, 19840), (4300, 18848), (4712, 17200), (4960, 16340), (5332, 15200), (5504, 14725), (5890, 13760), (6080, 13330), (6200, 13072), (6536, 12400), (6665, 12160), (6880, 11780), (7600, 10664), (8170, 9920), (8600, 9424)]