899999280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{1249999}}^1$

素因数の和:1250018

約数の個数: 60

約数和(自身を含む): 3022500000

約数和(自身を除く): 2122500720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 1249999, 2499998, 3749997, 4999996, 6249995, 7499994, 9999992, 11249991, 12499990, 14999988, 18749985, 19999984, 22499982, 24999980, 29999976, 37499970, 44999964, 49999960, 56249955, 59999952, 74999940, 89999928, 99999920, 112499910, 149999880, 179999856, 224999820, 299999760, 449999640, 899999280]

約数ペア:

[(1, 899999280), (2, 449999640), (3, 299999760), (4, 224999820), (5, 179999856), (6, 149999880), (8, 112499910), (9, 99999920), (10, 89999928), (12, 74999940), (15, 59999952), (16, 56249955), (18, 49999960), (20, 44999964), (24, 37499970), (30, 29999976), (36, 24999980), (40, 22499982), (45, 19999984), (48, 18749985), (60, 14999988), (72, 12499990), (80, 11249991), (90, 9999992), (120, 7499994), (144, 6249995), (180, 4999996), (240, 3749997), (360, 2499998), (720, 1249999)]