255440000

素因数分解:

$2^7\times 5^4\times {\mathrm{31}}^1\times {\mathrm{103}}^1$

素因数の和:168

約数の個数: 160

約数和(自身を含む): 662787840

約数和(自身を除く): 407347840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 64, 80, 100, 103, 124, 125, 128, 155, 160, 200, 206, 248, 250, 310, 320, 400, 412, 496, 500, 515, 620, 625, 640, 775, 800, 824, 992, 1000, 1030, 1240, 1250, 1550, 1600, 1648, 1984, 2000, 2060, 2480, 2500, 2575, 3100, 3193, 3200, 3296, 3875, 3968, 4000, 4120, 4960, 5000, 5150, 6200, 6386, 6592, 7750, 8000, 8240, 9920, 10000, 10300, 12400, 12772, 12875, 13184, 15500, 15965, 16000, 16480, 19375, 19840, 20000, 20600, 24800, 25544, 25750, 31000, 31930, 32960, 38750, 40000, 41200, 49600, 51088, 51500, 62000, 63860, 64375, 65920, 77500, 79825, 80000, 82400, 99200, 102176, 103000, 124000, 127720, 128750, 155000, 159650, 164800, 204352, 206000, 248000, 255440, 257500, 310000, 319300, 329600, 399125, 408704, 412000, 496000, 510880, 515000, 620000, 638600, 798250, 824000, 1021760, 1030000, 1240000, 1277200, 1596500, 1648000, 1995625, 2043520, 2060000, 2480000, 2554400, 3193000, 3991250, 4120000, 5108800, 6386000, 7982500, 8240000, 10217600, 12772000, 15965000, 25544000, 31930000, 51088000, 63860000, 127720000, 255440000]

約数ペア:

[(1, 255440000), (2, 127720000), (4, 63860000), (5, 51088000), (8, 31930000), (10, 25544000), (16, 15965000), (20, 12772000), (25, 10217600), (31, 8240000), (32, 7982500), (40, 6386000), (50, 5108800), (62, 4120000), (64, 3991250), (80, 3193000), (100, 2554400), (103, 2480000), (124, 2060000), (125, 2043520), (128, 1995625), (155, 1648000), (160, 1596500), (200, 1277200), (206, 1240000), (248, 1030000), (250, 1021760), (310, 824000), (320, 798250), (400, 638600), (412, 620000), (496, 515000), (500, 510880), (515, 496000), (620, 412000), (625, 408704), (640, 399125), (775, 329600), (800, 319300), (824, 310000), (992, 257500), (1000, 255440), (1030, 248000), (1240, 206000), (1250, 204352), (1550, 164800), (1600, 159650), (1648, 155000), (1984, 128750), (2000, 127720), (2060, 124000), (2480, 103000), (2500, 102176), (2575, 99200), (3100, 82400), (3193, 80000), (3200, 79825), (3296, 77500), (3875, 65920), (3968, 64375), (4000, 63860), (4120, 62000), (4960, 51500), (5000, 51088), (5150, 49600), (6200, 41200), (6386, 40000), (6592, 38750), (7750, 32960), (8000, 31930), (8240, 31000), (9920, 25750), (10000, 25544), (10300, 24800), (12400, 20600), (12772, 20000), (12875, 19840), (13184, 19375), (15500, 16480), (15965, 16000)]