19962800

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{349}}^1$

素因数の和:391

約数の個数: 120

約数和(自身を含む): 56506800

約数和(自身を除く): 36544000

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 25, 26, 40, 44, 50, 52, 55, 65, 80, 88, 100, 104, 110, 130, 143, 176, 200, 208, 220, 260, 275, 286, 325, 349, 400, 440, 520, 550, 572, 650, 698, 715, 880, 1040, 1100, 1144, 1300, 1396, 1430, 1745, 2200, 2288, 2600, 2792, 2860, 3490, 3575, 3839, 4400, 4537, 5200, 5584, 5720, 6980, 7150, 7678, 8725, 9074, 11440, 13960, 14300, 15356, 17450, 18148, 19195, 22685, 27920, 28600, 30712, 34900, 36296, 38390, 45370, 49907, 57200, 61424, 69800, 72592, 76780, 90740, 95975, 99814, 113425, 139600, 153560, 181480, 191950, 199628, 226850, 249535, 307120, 362960, 383900, 399256, 453700, 499070, 767800, 798512, 907400, 998140, 1247675, 1535600, 1814800, 1996280, 2495350, 3992560, 4990700, 9981400, 19962800]

約数ペア:

[(1, 19962800), (2, 9981400), (4, 4990700), (5, 3992560), (8, 2495350), (10, 1996280), (11, 1814800), (13, 1535600), (16, 1247675), (20, 998140), (22, 907400), (25, 798512), (26, 767800), (40, 499070), (44, 453700), (50, 399256), (52, 383900), (55, 362960), (65, 307120), (80, 249535), (88, 226850), (100, 199628), (104, 191950), (110, 181480), (130, 153560), (143, 139600), (176, 113425), (200, 99814), (208, 95975), (220, 90740), (260, 76780), (275, 72592), (286, 69800), (325, 61424), (349, 57200), (400, 49907), (440, 45370), (520, 38390), (550, 36296), (572, 34900), (650, 30712), (698, 28600), (715, 27920), (880, 22685), (1040, 19195), (1100, 18148), (1144, 17450), (1300, 15356), (1396, 14300), (1430, 13960), (1745, 11440), (2200, 9074), (2288, 8725), (2600, 7678), (2792, 7150), (2860, 6980), (3490, 5720), (3575, 5584), (3839, 5200), (4400, 4537)]