319559600

素因数分解:

$2^4\times 5^2\times {\mathrm{499}}^1\times {\mathrm{1601}}^1$

素因数の和:2118

約数の個数: 60

約数和(自身を含む): 769761000

約数和(自身を除く): 450201400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 499, 998, 1601, 1996, 2495, 3202, 3992, 4990, 6404, 7984, 8005, 9980, 12475, 12808, 16010, 19960, 24950, 25616, 32020, 39920, 40025, 49900, 64040, 80050, 99800, 128080, 160100, 199600, 320200, 640400, 798899, 1597798, 3195596, 3994495, 6391192, 7988990, 12782384, 15977980, 19972475, 31955960, 39944950, 63911920, 79889900, 159779800, 319559600]

約数ペア:

[(1, 319559600), (2, 159779800), (4, 79889900), (5, 63911920), (8, 39944950), (10, 31955960), (16, 19972475), (20, 15977980), (25, 12782384), (40, 7988990), (50, 6391192), (80, 3994495), (100, 3195596), (200, 1597798), (400, 798899), (499, 640400), (998, 320200), (1601, 199600), (1996, 160100), (2495, 128080), (3202, 99800), (3992, 80050), (4990, 64040), (6404, 49900), (7984, 40025), (8005, 39920), (9980, 32020), (12475, 25616), (12808, 24950), (16010, 19960)]