639200000

素因数分解:

$2^8\times 5^5\times {\mathrm{17}}^1\times {\mathrm{47}}^1$

素因数の和:105

約数の個数: 216

約数和(自身を含む): 1724514624

約数和(自身を除く): 1085314624

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 32, 34, 40, 47, 50, 64, 68, 80, 85, 94, 100, 125, 128, 136, 160, 170, 188, 200, 235, 250, 256, 272, 320, 340, 376, 400, 425, 470, 500, 544, 625, 640, 680, 752, 799, 800, 850, 940, 1000, 1088, 1175, 1250, 1280, 1360, 1504, 1598, 1600, 1700, 1880, 2000, 2125, 2176, 2350, 2500, 2720, 3008, 3125, 3196, 3200, 3400, 3760, 3995, 4000, 4250, 4352, 4700, 5000, 5440, 5875, 6016, 6250, 6392, 6400, 6800, 7520, 7990, 8000, 8500, 9400, 10000, 10625, 10880, 11750, 12032, 12500, 12784, 13600, 15040, 15980, 16000, 17000, 18800, 19975, 20000, 21250, 21760, 23500, 25000, 25568, 27200, 29375, 30080, 31960, 32000, 34000, 37600, 39950, 40000, 42500, 47000, 50000, 51136, 53125, 54400, 58750, 60160, 63920, 68000, 75200, 79900, 80000, 85000, 94000, 99875, 100000, 102272, 106250, 108800, 117500, 127840, 136000, 146875, 150400, 159800, 160000, 170000, 188000, 199750, 200000, 204544, 212500, 235000, 255680, 272000, 293750, 300800, 319600, 340000, 376000, 399500, 400000, 425000, 470000, 499375, 511360, 544000, 587500, 639200, 680000, 752000, 799000, 800000, 850000, 940000, 998750, 1022720, 1175000, 1278400, 1360000, 1504000, 1598000, 1700000, 1880000, 1997500, 2350000, 2496875, 2556800, 2720000, 3196000, 3400000, 3760000, 3995000, 4700000, 4993750, 5113600, 6392000, 6800000, 7520000, 7990000, 9400000, 9987500, 12784000, 13600000, 15980000, 18800000, 19975000, 25568000, 31960000, 37600000, 39950000, 63920000, 79900000, 127840000, 159800000, 319600000, 639200000]

約数ペア:

[(1, 639200000), (2, 319600000), (4, 159800000), (5, 127840000), (8, 79900000), (10, 63920000), (16, 39950000), (17, 37600000), (20, 31960000), (25, 25568000), (32, 19975000), (34, 18800000), (40, 15980000), (47, 13600000), (50, 12784000), (64, 9987500), (68, 9400000), (80, 7990000), (85, 7520000), (94, 6800000), (100, 6392000), (125, 5113600), (128, 4993750), (136, 4700000), (160, 3995000), (170, 3760000), (188, 3400000), (200, 3196000), (235, 2720000), (250, 2556800), (256, 2496875), (272, 2350000), (320, 1997500), (340, 1880000), (376, 1700000), (400, 1598000), (425, 1504000), (470, 1360000), (500, 1278400), (544, 1175000), (625, 1022720), (640, 998750), (680, 940000), (752, 850000), (799, 800000), (800, 799000), (850, 752000), (940, 680000), (1000, 639200), (1088, 587500), (1175, 544000), (1250, 511360), (1280, 499375), (1360, 470000), (1504, 425000), (1598, 400000), (1600, 399500), (1700, 376000), (1880, 340000), (2000, 319600), (2125, 300800), (2176, 293750), (2350, 272000), (2500, 255680), (2720, 235000), (3008, 212500), (3125, 204544), (3196, 200000), (3200, 199750), (3400, 188000), (3760, 170000), (3995, 160000), (4000, 159800), (4250, 150400), (4352, 146875), (4700, 136000), (5000, 127840), (5440, 117500), (5875, 108800), (6016, 106250), (6250, 102272), (6392, 100000), (6400, 99875), (6800, 94000), (7520, 85000), (7990, 80000), (8000, 79900), (8500, 75200), (9400, 68000), (10000, 63920), (10625, 60160), (10880, 58750), (11750, 54400), (12032, 53125), (12500, 51136), (12784, 50000), (13600, 47000), (15040, 42500), (15980, 40000), (16000, 39950), (17000, 37600), (18800, 34000), (19975, 32000), (20000, 31960), (21250, 30080), (21760, 29375), (23500, 27200), (25000, 25568)]