20547800

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1129}}^1$

素因数の和:1165

約数の個数: 96

約数和(自身を含む): 58850400

約数和(自身を除く): 38302600

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 25, 26, 28, 35, 40, 50, 52, 56, 65, 70, 91, 100, 104, 130, 140, 175, 182, 200, 260, 280, 325, 350, 364, 455, 520, 650, 700, 728, 910, 1129, 1300, 1400, 1820, 2258, 2275, 2600, 3640, 4516, 4550, 5645, 7903, 9032, 9100, 11290, 14677, 15806, 18200, 22580, 28225, 29354, 31612, 39515, 45160, 56450, 58708, 63224, 73385, 79030, 102739, 112900, 117416, 146770, 158060, 197575, 205478, 225800, 293540, 316120, 366925, 395150, 410956, 513695, 587080, 733850, 790300, 821912, 1027390, 1467700, 1580600, 2054780, 2568475, 2935400, 4109560, 5136950, 10273900, 20547800]

約数ペア:

[(1, 20547800), (2, 10273900), (4, 5136950), (5, 4109560), (7, 2935400), (8, 2568475), (10, 2054780), (13, 1580600), (14, 1467700), (20, 1027390), (25, 821912), (26, 790300), (28, 733850), (35, 587080), (40, 513695), (50, 410956), (52, 395150), (56, 366925), (65, 316120), (70, 293540), (91, 225800), (100, 205478), (104, 197575), (130, 158060), (140, 146770), (175, 117416), (182, 112900), (200, 102739), (260, 79030), (280, 73385), (325, 63224), (350, 58708), (364, 56450), (455, 45160), (520, 39515), (650, 31612), (700, 29354), (728, 28225), (910, 22580), (1129, 18200), (1300, 15806), (1400, 14677), (1820, 11290), (2258, 9100), (2275, 9032), (2600, 7903), (3640, 5645), (4516, 4550)]