7937500

素因数分解:

$2^2\times 5^6\times {\mathrm{127}}^1$

素因数の和:161

約数の個数: 42

約数和(自身を含む): 17499776

約数和(自身を除く): 9562276

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 127, 250, 254, 500, 508, 625, 635, 1250, 1270, 2500, 2540, 3125, 3175, 6250, 6350, 12500, 12700, 15625, 15875, 31250, 31750, 62500, 63500, 79375, 158750, 317500, 396875, 793750, 1587500, 1984375, 3968750, 7937500]

約数ペア:

[(1, 7937500), (2, 3968750), (4, 1984375), (5, 1587500), (10, 793750), (20, 396875), (25, 317500), (50, 158750), (100, 79375), (125, 63500), (127, 62500), (250, 31750), (254, 31250), (500, 15875), (508, 15625), (625, 12700), (635, 12500), (1250, 6350), (1270, 6250), (2500, 3175), (2540, 3125)]