2540000

素因数分解:

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

素因数の和:157

約数の個数: 60

約数和(自身を含む): 6297984

約数和(自身を除く): 3757984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 127, 160, 200, 250, 254, 400, 500, 508, 625, 635, 800, 1000, 1016, 1250, 1270, 2000, 2032, 2500, 2540, 3175, 4000, 4064, 5000, 5080, 6350, 10000, 10160, 12700, 15875, 20000, 20320, 25400, 31750, 50800, 63500, 79375, 101600, 127000, 158750, 254000, 317500, 508000, 635000, 1270000, 2540000]

約数ペア:

[(1, 2540000), (2, 1270000), (4, 635000), (5, 508000), (8, 317500), (10, 254000), (16, 158750), (20, 127000), (25, 101600), (32, 79375), (40, 63500), (50, 50800), (80, 31750), (100, 25400), (125, 20320), (127, 20000), (160, 15875), (200, 12700), (250, 10160), (254, 10000), (400, 6350), (500, 5080), (508, 5000), (625, 4064), (635, 4000), (800, 3175), (1000, 2540), (1016, 2500), (1250, 2032), (1270, 2000)]