21122000

素因数分解:

$2^4\times 5^3\times {\mathrm{59}}^1\times {\mathrm{179}}^1$

素因数の和:261

約数の個数: 80

約数和(自身を含む): 52228800

約数和(自身を除く): 31106800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 59, 80, 100, 118, 125, 179, 200, 236, 250, 295, 358, 400, 472, 500, 590, 716, 895, 944, 1000, 1180, 1432, 1475, 1790, 2000, 2360, 2864, 2950, 3580, 4475, 4720, 5900, 7160, 7375, 8950, 10561, 11800, 14320, 14750, 17900, 21122, 22375, 23600, 29500, 35800, 42244, 44750, 52805, 59000, 71600, 84488, 89500, 105610, 118000, 168976, 179000, 211220, 264025, 358000, 422440, 528050, 844880, 1056100, 1320125, 2112200, 2640250, 4224400, 5280500, 10561000, 21122000]

約数ペア:

[(1, 21122000), (2, 10561000), (4, 5280500), (5, 4224400), (8, 2640250), (10, 2112200), (16, 1320125), (20, 1056100), (25, 844880), (40, 528050), (50, 422440), (59, 358000), (80, 264025), (100, 211220), (118, 179000), (125, 168976), (179, 118000), (200, 105610), (236, 89500), (250, 84488), (295, 71600), (358, 59000), (400, 52805), (472, 44750), (500, 42244), (590, 35800), (716, 29500), (895, 23600), (944, 22375), (1000, 21122), (1180, 17900), (1432, 14750), (1475, 14320), (1790, 11800), (2000, 10561), (2360, 8950), (2864, 7375), (2950, 7160), (3580, 5900), (4475, 4720)]