79997500

素因数分解:

$2^2\times 5^4\times {\mathrm{11}}^1\times {\mathrm{2909}}^1$

素因数の和:2944

約数の個数: 60

約数和(自身を含む): 190907640

約数和(自身を除く): 110910140

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 125, 220, 250, 275, 500, 550, 625, 1100, 1250, 1375, 2500, 2750, 2909, 5500, 5818, 6875, 11636, 13750, 14545, 27500, 29090, 31999, 58180, 63998, 72725, 127996, 145450, 159995, 290900, 319990, 363625, 639980, 727250, 799975, 1454500, 1599950, 1818125, 3199900, 3636250, 3999875, 7272500, 7999750, 15999500, 19999375, 39998750, 79997500]

約数ペア:

[(1, 79997500), (2, 39998750), (4, 19999375), (5, 15999500), (10, 7999750), (11, 7272500), (20, 3999875), (22, 3636250), (25, 3199900), (44, 1818125), (50, 1599950), (55, 1454500), (100, 799975), (110, 727250), (125, 639980), (220, 363625), (250, 319990), (275, 290900), (500, 159995), (550, 145450), (625, 127996), (1100, 72725), (1250, 63998), (1375, 58180), (2500, 31999), (2750, 29090), (2909, 27500), (5500, 14545), (5818, 13750), (6875, 11636)]