158750000

素因数分解:

$2^4\times 5^7\times {\mathrm{127}}^1$

素因数の和:170

約数の個数: 80

約数和(自身を含む): 387499008

約数和(自身を除く): 228749008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 127, 200, 250, 254, 400, 500, 508, 625, 635, 1000, 1016, 1250, 1270, 2000, 2032, 2500, 2540, 3125, 3175, 5000, 5080, 6250, 6350, 10000, 10160, 12500, 12700, 15625, 15875, 25000, 25400, 31250, 31750, 50000, 50800, 62500, 63500, 78125, 79375, 125000, 127000, 156250, 158750, 250000, 254000, 312500, 317500, 396875, 625000, 635000, 793750, 1250000, 1270000, 1587500, 1984375, 3175000, 3968750, 6350000, 7937500, 9921875, 15875000, 19843750, 31750000, 39687500, 79375000, 158750000]

約数ペア:

[(1, 158750000), (2, 79375000), (4, 39687500), (5, 31750000), (8, 19843750), (10, 15875000), (16, 9921875), (20, 7937500), (25, 6350000), (40, 3968750), (50, 3175000), (80, 1984375), (100, 1587500), (125, 1270000), (127, 1250000), (200, 793750), (250, 635000), (254, 625000), (400, 396875), (500, 317500), (508, 312500), (625, 254000), (635, 250000), (1000, 158750), (1016, 156250), (1250, 127000), (1270, 125000), (2000, 79375), (2032, 78125), (2500, 63500), (2540, 62500), (3125, 50800), (3175, 50000), (5000, 31750), (5080, 31250), (6250, 25400), (6350, 25000), (10000, 15875), (10160, 15625), (12500, 12700)]