20803475920

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1306751}}^1$

素因数の和:1306963

約数の個数: 40

約数和(自身を含む): 48611174400

約数和(自身を除く): 27807698480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 398, 796, 995, 1592, 1990, 3184, 3980, 7960, 15920, 1306751, 2613502, 5227004, 6533755, 10454008, 13067510, 20908016, 26135020, 52270040, 104540080, 260043449, 520086898, 1040173796, 1300217245, 2080347592, 2600434490, 4160695184, 5200868980, 10401737960, 20803475920]

約数ペア:

[(1, 20803475920), (2, 10401737960), (4, 5200868980), (5, 4160695184), (8, 2600434490), (10, 2080347592), (16, 1300217245), (20, 1040173796), (40, 520086898), (80, 260043449), (199, 104540080), (398, 52270040), (796, 26135020), (995, 20908016), (1592, 13067510), (1990, 10454008), (3184, 6533755), (3980, 5227004), (7960, 2613502), (15920, 1306751)]