21439000

素因数分解:

$2^3\times 5^3\times {\mathrm{11}}^1\times {\mathrm{1949}}^1$

素因数の和:1981

約数の個数: 64

約数和(自身を含む): 54756000

約数和(自身を除く): 33317000

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 125, 200, 220, 250, 275, 440, 500, 550, 1000, 1100, 1375, 1949, 2200, 2750, 3898, 5500, 7796, 9745, 11000, 15592, 19490, 21439, 38980, 42878, 48725, 77960, 85756, 97450, 107195, 171512, 194900, 214390, 243625, 389800, 428780, 487250, 535975, 857560, 974500, 1071950, 1949000, 2143900, 2679875, 4287800, 5359750, 10719500, 21439000]

約数ペア:

[(1, 21439000), (2, 10719500), (4, 5359750), (5, 4287800), (8, 2679875), (10, 2143900), (11, 1949000), (20, 1071950), (22, 974500), (25, 857560), (40, 535975), (44, 487250), (50, 428780), (55, 389800), (88, 243625), (100, 214390), (110, 194900), (125, 171512), (200, 107195), (220, 97450), (250, 85756), (275, 77960), (440, 48725), (500, 42878), (550, 38980), (1000, 21439), (1100, 19490), (1375, 15592), (1949, 11000), (2200, 9745), (2750, 7796), (3898, 5500)]