68125000

素因数分解:

$2^3\times 5^7\times {\mathrm{109}}^1$

素因数の和:150

約数の個数: 64

約数和(自身を含む): 161132400

約数和(自身を除く): 93007400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 109, 125, 200, 218, 250, 436, 500, 545, 625, 872, 1000, 1090, 1250, 2180, 2500, 2725, 3125, 4360, 5000, 5450, 6250, 10900, 12500, 13625, 15625, 21800, 25000, 27250, 31250, 54500, 62500, 68125, 78125, 109000, 125000, 136250, 156250, 272500, 312500, 340625, 545000, 625000, 681250, 1362500, 1703125, 2725000, 3406250, 6812500, 8515625, 13625000, 17031250, 34062500, 68125000]

約数ペア:

[(1, 68125000), (2, 34062500), (4, 17031250), (5, 13625000), (8, 8515625), (10, 6812500), (20, 3406250), (25, 2725000), (40, 1703125), (50, 1362500), (100, 681250), (109, 625000), (125, 545000), (200, 340625), (218, 312500), (250, 272500), (436, 156250), (500, 136250), (545, 125000), (625, 109000), (872, 78125), (1000, 68125), (1090, 62500), (1250, 54500), (2180, 31250), (2500, 27250), (2725, 25000), (3125, 21800), (4360, 15625), (5000, 13625), (5450, 12500), (6250, 10900)]