39998750

素因数分解:

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

素因数の和:2942

約数の個数: 40

約数和(自身を含む): 81817560

約数和(自身を除く): 41818810

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 125, 250, 275, 550, 625, 1250, 1375, 2750, 2909, 5818, 6875, 13750, 14545, 29090, 31999, 63998, 72725, 145450, 159995, 319990, 363625, 727250, 799975, 1599950, 1818125, 3636250, 3999875, 7999750, 19999375, 39998750]

約数ペア:

[(1, 39998750), (2, 19999375), (5, 7999750), (10, 3999875), (11, 3636250), (22, 1818125), (25, 1599950), (50, 799975), (55, 727250), (110, 363625), (125, 319990), (250, 159995), (275, 145450), (550, 72725), (625, 63998), (1250, 31999), (1375, 29090), (2750, 14545), (2909, 13750), (5818, 6875)]