39800240

素因数分解:

$2^4\times 5^1\times {\mathrm{499}}^1\times {\mathrm{997}}^1$

素因数の和:1509

約数の個数: 40

約数和(自身を含む): 92814000

約数和(自身を除く): 53013760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 499, 997, 998, 1994, 1996, 2495, 3988, 3992, 4985, 4990, 7976, 7984, 9970, 9980, 15952, 19940, 19960, 39880, 39920, 79760, 497503, 995006, 1990012, 2487515, 3980024, 4975030, 7960048, 9950060, 19900120, 39800240]

約数ペア:

[(1, 39800240), (2, 19900120), (4, 9950060), (5, 7960048), (8, 4975030), (10, 3980024), (16, 2487515), (20, 1990012), (40, 995006), (80, 497503), (499, 79760), (997, 39920), (998, 39880), (1994, 19960), (1996, 19940), (2495, 15952), (3988, 9980), (3992, 9970), (4985, 7984), (4990, 7976)]