279479920

素因数分解:

$2^4\times 5^1\times {\mathrm{499}}^1\times {\mathrm{7001}}^1$

素因数の和:7513

約数の個数: 40

約数和(自身を含む): 651186000

約数和(自身を除く): 371706080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 499, 998, 1996, 2495, 3992, 4990, 7001, 7984, 9980, 14002, 19960, 28004, 35005, 39920, 56008, 70010, 112016, 140020, 280040, 560080, 3493499, 6986998, 13973996, 17467495, 27947992, 34934990, 55895984, 69869980, 139739960, 279479920]

約数ペア:

[(1, 279479920), (2, 139739960), (4, 69869980), (5, 55895984), (8, 34934990), (10, 27947992), (16, 17467495), (20, 13973996), (40, 6986998), (80, 3493499), (499, 560080), (998, 280040), (1996, 140020), (2495, 112016), (3992, 70010), (4990, 56008), (7001, 39920), (7984, 35005), (9980, 28004), (14002, 19960)]