1285880000

素因数分解:

$2^6\times 5^4\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:141

約数の個数: 280

約数和(自身を含む): 3542166144

約数和(自身を除く): 2256286144

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 31, 32, 34, 40, 50, 61, 62, 64, 68, 80, 85, 100, 122, 124, 125, 136, 155, 160, 170, 200, 244, 248, 250, 272, 305, 310, 320, 340, 400, 425, 488, 496, 500, 527, 544, 610, 620, 625, 680, 775, 800, 850, 976, 992, 1000, 1037, 1054, 1088, 1220, 1240, 1250, 1360, 1525, 1550, 1600, 1700, 1891, 1952, 1984, 2000, 2074, 2108, 2125, 2440, 2480, 2500, 2635, 2720, 3050, 3100, 3400, 3782, 3875, 3904, 4000, 4148, 4216, 4250, 4880, 4960, 5000, 5185, 5270, 5440, 6100, 6200, 6800, 7564, 7625, 7750, 8000, 8296, 8432, 8500, 9455, 9760, 9920, 10000, 10370, 10540, 10625, 12200, 12400, 13175, 13600, 15128, 15250, 15500, 16592, 16864, 17000, 18910, 19375, 19520, 20000, 20740, 21080, 21250, 24400, 24800, 25925, 26350, 27200, 30256, 30500, 31000, 32147, 33184, 33728, 34000, 37820, 38125, 38750, 40000, 41480, 42160, 42500, 47275, 48800, 49600, 51850, 52700, 60512, 61000, 62000, 64294, 65875, 66368, 68000, 75640, 76250, 77500, 82960, 84320, 85000, 94550, 97600, 103700, 105400, 121024, 122000, 124000, 128588, 129625, 131750, 136000, 151280, 152500, 155000, 160735, 165920, 168640, 170000, 189100, 207400, 210800, 236375, 244000, 248000, 257176, 259250, 263500, 302560, 305000, 310000, 321470, 329375, 331840, 340000, 378200, 414800, 421600, 472750, 488000, 514352, 518500, 527000, 605120, 610000, 620000, 642940, 648125, 658750, 680000, 756400, 803675, 829600, 843200, 945500, 1028704, 1037000, 1054000, 1181875, 1220000, 1240000, 1285880, 1296250, 1317500, 1512800, 1607350, 1659200, 1891000, 2057408, 2074000, 2108000, 2363750, 2440000, 2571760, 2592500, 2635000, 3025600, 3214700, 3782000, 4018375, 4148000, 4216000, 4727500, 5143520, 5185000, 5270000, 6429400, 7564000, 8036750, 8296000, 9455000, 10287040, 10370000, 10540000, 12858800, 15128000, 16073500, 18910000, 20091875, 20740000, 21080000, 25717600, 32147000, 37820000, 40183750, 41480000, 51435200, 64294000, 75640000, 80367500, 128588000, 160735000, 257176000, 321470000, 642940000, 1285880000]

約数ペア:

[(1, 1285880000), (2, 642940000), (4, 321470000), (5, 257176000), (8, 160735000), (10, 128588000), (16, 80367500), (17, 75640000), (20, 64294000), (25, 51435200), (31, 41480000), (32, 40183750), (34, 37820000), (40, 32147000), (50, 25717600), (61, 21080000), (62, 20740000), (64, 20091875), (68, 18910000), (80, 16073500), (85, 15128000), (100, 12858800), (122, 10540000), (124, 10370000), (125, 10287040), (136, 9455000), (155, 8296000), (160, 8036750), (170, 7564000), (200, 6429400), (244, 5270000), (248, 5185000), (250, 5143520), (272, 4727500), (305, 4216000), (310, 4148000), (320, 4018375), (340, 3782000), (400, 3214700), (425, 3025600), (488, 2635000), (496, 2592500), (500, 2571760), (527, 2440000), (544, 2363750), (610, 2108000), (620, 2074000), (625, 2057408), (680, 1891000), (775, 1659200), (800, 1607350), (850, 1512800), (976, 1317500), (992, 1296250), (1000, 1285880), (1037, 1240000), (1054, 1220000), (1088, 1181875), (1220, 1054000), (1240, 1037000), (1250, 1028704), (1360, 945500), (1525, 843200), (1550, 829600), (1600, 803675), (1700, 756400), (1891, 680000), (1952, 658750), (1984, 648125), (2000, 642940), (2074, 620000), (2108, 610000), (2125, 605120), (2440, 527000), (2480, 518500), (2500, 514352), (2635, 488000), (2720, 472750), (3050, 421600), (3100, 414800), (3400, 378200), (3782, 340000), (3875, 331840), (3904, 329375), (4000, 321470), (4148, 310000), (4216, 305000), (4250, 302560), (4880, 263500), (4960, 259250), (5000, 257176), (5185, 248000), (5270, 244000), (5440, 236375), (6100, 210800), (6200, 207400), (6800, 189100), (7564, 170000), (7625, 168640), (7750, 165920), (8000, 160735), (8296, 155000), (8432, 152500), (8500, 151280), (9455, 136000), (9760, 131750), (9920, 129625), (10000, 128588), (10370, 124000), (10540, 122000), (10625, 121024), (12200, 105400), (12400, 103700), (13175, 97600), (13600, 94550), (15128, 85000), (15250, 84320), (15500, 82960), (16592, 77500), (16864, 76250), (17000, 75640), (18910, 68000), (19375, 66368), (19520, 65875), (20000, 64294), (20740, 62000), (21080, 61000), (21250, 60512), (24400, 52700), (24800, 51850), (25925, 49600), (26350, 48800), (27200, 47275), (30256, 42500), (30500, 42160), (31000, 41480), (32147, 40000), (33184, 38750), (33728, 38125), (34000, 37820)]