1270000000

素因数分解:

$2^7\times 5^7\times {\mathrm{127}}^1$

素因数の和:176

約数の個数: 128

約数和(自身を含む): 3187491840

約数和(自身を除く): 1917491840

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, 320, 400, 500, 508, 625, 635, 640, 800, 1000, 1016, 1250, 1270, 1600, 2000, 2032, 2500, 2540, 3125, 3175, 3200, 4000, 4064, 5000, 5080, 6250, 6350, 8000, 8128, 10000, 10160, 12500, 12700, 15625, 15875, 16000, 16256, 20000, 20320, 25000, 25400, 31250, 31750, 40000, 40640, 50000, 50800, 62500, 63500, 78125, 79375, 80000, 81280, 100000, 101600, 125000, 127000, 156250, 158750, 200000, 203200, 250000, 254000, 312500, 317500, 396875, 400000, 406400, 500000, 508000, 625000, 635000, 793750, 1000000, 1016000, 1250000, 1270000, 1587500, 1984375, 2000000, 2032000, 2500000, 2540000, 3175000, 3968750, 5000000, 5080000, 6350000, 7937500, 9921875, 10000000, 10160000, 12700000, 15875000, 19843750, 25400000, 31750000, 39687500, 50800000, 63500000, 79375000, 127000000, 158750000, 254000000, 317500000, 635000000, 1270000000]

約数ペア:

[(1, 1270000000), (2, 635000000), (4, 317500000), (5, 254000000), (8, 158750000), (10, 127000000), (16, 79375000), (20, 63500000), (25, 50800000), (32, 39687500), (40, 31750000), (50, 25400000), (64, 19843750), (80, 15875000), (100, 12700000), (125, 10160000), (127, 10000000), (128, 9921875), (160, 7937500), (200, 6350000), (250, 5080000), (254, 5000000), (320, 3968750), (400, 3175000), (500, 2540000), (508, 2500000), (625, 2032000), (635, 2000000), (640, 1984375), (800, 1587500), (1000, 1270000), (1016, 1250000), (1250, 1016000), (1270, 1000000), (1600, 793750), (2000, 635000), (2032, 625000), (2500, 508000), (2540, 500000), (3125, 406400), (3175, 400000), (3200, 396875), (4000, 317500), (4064, 312500), (5000, 254000), (5080, 250000), (6250, 203200), (6350, 200000), (8000, 158750), (8128, 156250), (10000, 127000), (10160, 125000), (12500, 101600), (12700, 100000), (15625, 81280), (15875, 80000), (16000, 79375), (16256, 78125), (20000, 63500), (20320, 62500), (25000, 50800), (25400, 50000), (31250, 40640), (31750, 40000)]