19772500

素因数分解:

$2^2\times 5^4\times {\mathrm{11}}^1\times {\mathrm{719}}^1$

素因数の和:754

約数の個数: 60

約数和(自身を含む): 47234880

約数和(自身を除く): 27462380

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 125, 220, 250, 275, 500, 550, 625, 719, 1100, 1250, 1375, 1438, 2500, 2750, 2876, 3595, 5500, 6875, 7190, 7909, 13750, 14380, 15818, 17975, 27500, 31636, 35950, 39545, 71900, 79090, 89875, 158180, 179750, 197725, 359500, 395450, 449375, 790900, 898750, 988625, 1797500, 1977250, 3954500, 4943125, 9886250, 19772500]

約数ペア:

[(1, 19772500), (2, 9886250), (4, 4943125), (5, 3954500), (10, 1977250), (11, 1797500), (20, 988625), (22, 898750), (25, 790900), (44, 449375), (50, 395450), (55, 359500), (100, 197725), (110, 179750), (125, 158180), (220, 89875), (250, 79090), (275, 71900), (500, 39545), (550, 35950), (625, 31636), (719, 27500), (1100, 17975), (1250, 15818), (1375, 14380), (1438, 13750), (2500, 7909), (2750, 7190), (2876, 6875), (3595, 5500)]