79760000

素因数分解:

$2^7\times 5^4\times {\mathrm{997}}^1$

素因数の和:1031

約数の個数: 80

約数和(自身を含む): 198756690

約数和(自身を除く): 118996690

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, 997, 1000, 1250, 1600, 1994, 2000, 2500, 3200, 3988, 4000, 4985, 5000, 7976, 8000, 9970, 10000, 15952, 16000, 19940, 20000, 24925, 31904, 39880, 40000, 49850, 63808, 79760, 80000, 99700, 124625, 127616, 159520, 199400, 249250, 319040, 398800, 498500, 623125, 638080, 797600, 997000, 1246250, 1595200, 1994000, 2492500, 3190400, 3988000, 4985000, 7976000, 9970000, 15952000, 19940000, 39880000, 79760000]

約数ペア:

[(1, 79760000), (2, 39880000), (4, 19940000), (5, 15952000), (8, 9970000), (10, 7976000), (16, 4985000), (20, 3988000), (25, 3190400), (32, 2492500), (40, 1994000), (50, 1595200), (64, 1246250), (80, 997000), (100, 797600), (125, 638080), (128, 623125), (160, 498500), (200, 398800), (250, 319040), (320, 249250), (400, 199400), (500, 159520), (625, 127616), (640, 124625), (800, 99700), (997, 80000), (1000, 79760), (1250, 63808), (1600, 49850), (1994, 40000), (2000, 39880), (2500, 31904), (3200, 24925), (3988, 20000), (4000, 19940), (4985, 16000), (5000, 15952), (7976, 10000), (8000, 9970)]