209969000

素因数分解:

$2^3\times 5^3\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{257}}^1$

素因数の和:340

約数の個数: 128

約数和(自身を含む): 531273600

約数和(自身を除く): 321304600

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 43, 50, 76, 86, 95, 100, 125, 152, 172, 190, 200, 215, 250, 257, 344, 380, 430, 475, 500, 514, 760, 817, 860, 950, 1000, 1028, 1075, 1285, 1634, 1720, 1900, 2056, 2150, 2375, 2570, 3268, 3800, 4085, 4300, 4750, 4883, 5140, 5375, 6425, 6536, 8170, 8600, 9500, 9766, 10280, 10750, 11051, 12850, 16340, 19000, 19532, 20425, 21500, 22102, 24415, 25700, 32125, 32680, 39064, 40850, 43000, 44204, 48830, 51400, 55255, 64250, 81700, 88408, 97660, 102125, 110510, 122075, 128500, 163400, 195320, 204250, 209969, 221020, 244150, 257000, 276275, 408500, 419938, 442040, 488300, 552550, 610375, 817000, 839876, 976600, 1049845, 1105100, 1220750, 1381375, 1679752, 2099690, 2210200, 2441500, 2762750, 4199380, 4883000, 5249225, 5525500, 8398760, 10498450, 11051000, 20996900, 26246125, 41993800, 52492250, 104984500, 209969000]

約数ペア:

[(1, 209969000), (2, 104984500), (4, 52492250), (5, 41993800), (8, 26246125), (10, 20996900), (19, 11051000), (20, 10498450), (25, 8398760), (38, 5525500), (40, 5249225), (43, 4883000), (50, 4199380), (76, 2762750), (86, 2441500), (95, 2210200), (100, 2099690), (125, 1679752), (152, 1381375), (172, 1220750), (190, 1105100), (200, 1049845), (215, 976600), (250, 839876), (257, 817000), (344, 610375), (380, 552550), (430, 488300), (475, 442040), (500, 419938), (514, 408500), (760, 276275), (817, 257000), (860, 244150), (950, 221020), (1000, 209969), (1028, 204250), (1075, 195320), (1285, 163400), (1634, 128500), (1720, 122075), (1900, 110510), (2056, 102125), (2150, 97660), (2375, 88408), (2570, 81700), (3268, 64250), (3800, 55255), (4085, 51400), (4300, 48830), (4750, 44204), (4883, 43000), (5140, 40850), (5375, 39064), (6425, 32680), (6536, 32125), (8170, 25700), (8600, 24415), (9500, 22102), (9766, 21500), (10280, 20425), (10750, 19532), (11051, 19000), (12850, 16340)]