88720000

素因数分解:

$2^7\times 5^4\times {\mathrm{1109}}^1$

素因数の和:1143

約数の個数: 80

約数和(自身を含む): 221062050

約数和(自身を除く): 132342050

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 320, 400, 500, 625, 640, 800, 1000, 1109, 1250, 1600, 2000, 2218, 2500, 3200, 4000, 4436, 5000, 5545, 8000, 8872, 10000, 11090, 16000, 17744, 20000, 22180, 27725, 35488, 40000, 44360, 55450, 70976, 80000, 88720, 110900, 138625, 141952, 177440, 221800, 277250, 354880, 443600, 554500, 693125, 709760, 887200, 1109000, 1386250, 1774400, 2218000, 2772500, 3548800, 4436000, 5545000, 8872000, 11090000, 17744000, 22180000, 44360000, 88720000]

約数ペア:

[(1, 88720000), (2, 44360000), (4, 22180000), (5, 17744000), (8, 11090000), (10, 8872000), (16, 5545000), (20, 4436000), (25, 3548800), (32, 2772500), (40, 2218000), (50, 1774400), (64, 1386250), (80, 1109000), (100, 887200), (125, 709760), (128, 693125), (160, 554500), (200, 443600), (250, 354880), (320, 277250), (400, 221800), (500, 177440), (625, 141952), (640, 138625), (800, 110900), (1000, 88720), (1109, 80000), (1250, 70976), (1600, 55450), (2000, 44360), (2218, 40000), (2500, 35488), (3200, 27725), (4000, 22180), (4436, 20000), (5000, 17744), (5545, 16000), (8000, 11090), (8872, 10000)]