80891840

素因数分解:

$2^6\times 5^1\times {\mathrm{449}}^1\times {\mathrm{563}}^1$

素因数の和:1029

約数の個数: 56

約数和(自身を含む): 193395600

約数和(自身を除く): 112503760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 449, 563, 898, 1126, 1796, 2245, 2252, 2815, 3592, 4490, 4504, 5630, 7184, 8980, 9008, 11260, 14368, 17960, 18016, 22520, 28736, 35920, 36032, 45040, 71840, 90080, 143680, 180160, 252787, 505574, 1011148, 1263935, 2022296, 2527870, 4044592, 5055740, 8089184, 10111480, 16178368, 20222960, 40445920, 80891840]

約数ペア:

[(1, 80891840), (2, 40445920), (4, 20222960), (5, 16178368), (8, 10111480), (10, 8089184), (16, 5055740), (20, 4044592), (32, 2527870), (40, 2022296), (64, 1263935), (80, 1011148), (160, 505574), (320, 252787), (449, 180160), (563, 143680), (898, 90080), (1126, 71840), (1796, 45040), (2245, 36032), (2252, 35920), (2815, 28736), (3592, 22520), (4490, 18016), (4504, 17960), (5630, 14368), (7184, 11260), (8980, 9008)]