77804080

素因数分解:

$2^4\times 5^1\times {\mathrm{499}}^1\times {\mathrm{1949}}^1$

素因数の和:2461

約数の個数: 40

約数和(自身を含む): 181350000

約数和(自身を除く): 103545920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 499, 998, 1949, 1996, 2495, 3898, 3992, 4990, 7796, 7984, 9745, 9980, 15592, 19490, 19960, 31184, 38980, 39920, 77960, 155920, 972551, 1945102, 3890204, 4862755, 7780408, 9725510, 15560816, 19451020, 38902040, 77804080]

約数ペア:

[(1, 77804080), (2, 38902040), (4, 19451020), (5, 15560816), (8, 9725510), (10, 7780408), (16, 4862755), (20, 3890204), (40, 1945102), (80, 972551), (499, 155920), (998, 77960), (1949, 39920), (1996, 38980), (2495, 31184), (3898, 19960), (3992, 19490), (4990, 15592), (7796, 9980), (7984, 9745)]