5161280000

素因数分解:

$2^9\times 5^4\times {\mathrm{127}}^2$

素因数の和:292

約数の個数: 150

約数和(自身を含む): 12988741491

約数和(自身を除く): 7827461491

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 127, 128, 160, 200, 250, 254, 256, 320, 400, 500, 508, 512, 625, 635, 640, 800, 1000, 1016, 1250, 1270, 1280, 1600, 2000, 2032, 2500, 2540, 2560, 3175, 3200, 4000, 4064, 5000, 5080, 6350, 6400, 8000, 8128, 10000, 10160, 12700, 12800, 15875, 16000, 16129, 16256, 20000, 20320, 25400, 31750, 32000, 32258, 32512, 40000, 40640, 50800, 63500, 64000, 64516, 65024, 79375, 80000, 80645, 81280, 101600, 127000, 129032, 158750, 160000, 161290, 162560, 203200, 254000, 258064, 317500, 320000, 322580, 325120, 403225, 406400, 508000, 516128, 635000, 645160, 806450, 812800, 1016000, 1032256, 1270000, 1290320, 1612900, 1625600, 2016125, 2032000, 2064512, 2540000, 2580640, 3225800, 4032250, 4064000, 4129024, 5080000, 5161280, 6451600, 8064500, 8128000, 8258048, 10080625, 10160000, 10322560, 12903200, 16129000, 20161250, 20320000, 20645120, 25806400, 32258000, 40322500, 40640000, 41290240, 51612800, 64516000, 80645000, 103225600, 129032000, 161290000, 206451200, 258064000, 322580000, 516128000, 645160000, 1032256000, 1290320000, 2580640000, 5161280000]

約数ペア:

[(1, 5161280000), (2, 2580640000), (4, 1290320000), (5, 1032256000), (8, 645160000), (10, 516128000), (16, 322580000), (20, 258064000), (25, 206451200), (32, 161290000), (40, 129032000), (50, 103225600), (64, 80645000), (80, 64516000), (100, 51612800), (125, 41290240), (127, 40640000), (128, 40322500), (160, 32258000), (200, 25806400), (250, 20645120), (254, 20320000), (256, 20161250), (320, 16129000), (400, 12903200), (500, 10322560), (508, 10160000), (512, 10080625), (625, 8258048), (635, 8128000), (640, 8064500), (800, 6451600), (1000, 5161280), (1016, 5080000), (1250, 4129024), (1270, 4064000), (1280, 4032250), (1600, 3225800), (2000, 2580640), (2032, 2540000), (2500, 2064512), (2540, 2032000), (2560, 2016125), (3175, 1625600), (3200, 1612900), (4000, 1290320), (4064, 1270000), (5000, 1032256), (5080, 1016000), (6350, 812800), (6400, 806450), (8000, 645160), (8128, 635000), (10000, 516128), (10160, 508000), (12700, 406400), (12800, 403225), (15875, 325120), (16000, 322580), (16129, 320000), (16256, 317500), (20000, 258064), (20320, 254000), (25400, 203200), (31750, 162560), (32000, 161290), (32258, 160000), (32512, 158750), (40000, 129032), (40640, 127000), (50800, 101600), (63500, 81280), (64000, 80645), (64516, 80000), (65024, 79375)]