81999040

素因数分解:

$2^6\times 5^1\times {\mathrm{151}}^1\times {\mathrm{1697}}^1$

素因数の和:1865

約数の個数: 56

約数和(自身を含む): 196669152

約数和(自身を除く): 114670112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 151, 160, 302, 320, 604, 755, 1208, 1510, 1697, 2416, 3020, 3394, 4832, 6040, 6788, 8485, 9664, 12080, 13576, 16970, 24160, 27152, 33940, 48320, 54304, 67880, 108608, 135760, 256247, 271520, 512494, 543040, 1024988, 1281235, 2049976, 2562470, 4099952, 5124940, 8199904, 10249880, 16399808, 20499760, 40999520, 81999040]

約数ペア:

[(1, 81999040), (2, 40999520), (4, 20499760), (5, 16399808), (8, 10249880), (10, 8199904), (16, 5124940), (20, 4099952), (32, 2562470), (40, 2049976), (64, 1281235), (80, 1024988), (151, 543040), (160, 512494), (302, 271520), (320, 256247), (604, 135760), (755, 108608), (1208, 67880), (1510, 54304), (1697, 48320), (2416, 33940), (3020, 27152), (3394, 24160), (4832, 16970), (6040, 13576), (6788, 12080), (8485, 9664)]