20666800

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{61}}^1$

素因数の和:108

約数の個数: 180

約数和(自身を含む): 63395248

約数和(自身を除く): 42728448

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 25, 28, 35, 40, 44, 50, 55, 56, 61, 70, 77, 80, 88, 100, 110, 112, 121, 122, 140, 154, 175, 176, 200, 220, 242, 244, 275, 280, 305, 308, 350, 385, 400, 427, 440, 484, 488, 550, 560, 605, 610, 616, 671, 700, 770, 847, 854, 880, 968, 976, 1100, 1210, 1220, 1232, 1342, 1400, 1525, 1540, 1694, 1708, 1925, 1936, 2135, 2200, 2420, 2440, 2684, 2800, 3025, 3050, 3080, 3355, 3388, 3416, 3850, 4235, 4270, 4400, 4697, 4840, 4880, 5368, 6050, 6100, 6160, 6710, 6776, 6832, 7381, 7700, 8470, 8540, 9394, 9680, 10675, 10736, 12100, 12200, 13420, 13552, 14762, 15400, 16775, 16940, 17080, 18788, 21175, 21350, 23485, 24200, 24400, 26840, 29524, 30800, 33550, 33880, 34160, 36905, 37576, 42350, 42700, 46970, 48400, 51667, 53680, 59048, 67100, 67760, 73810, 75152, 84700, 85400, 93940, 103334, 117425, 118096, 134200, 147620, 169400, 170800, 184525, 187880, 206668, 234850, 258335, 268400, 295240, 338800, 369050, 375760, 413336, 469700, 516670, 590480, 738100, 826672, 939400, 1033340, 1291675, 1476200, 1878800, 2066680, 2583350, 2952400, 4133360, 5166700, 10333400, 20666800]

約数ペア:

[(1, 20666800), (2, 10333400), (4, 5166700), (5, 4133360), (7, 2952400), (8, 2583350), (10, 2066680), (11, 1878800), (14, 1476200), (16, 1291675), (20, 1033340), (22, 939400), (25, 826672), (28, 738100), (35, 590480), (40, 516670), (44, 469700), (50, 413336), (55, 375760), (56, 369050), (61, 338800), (70, 295240), (77, 268400), (80, 258335), (88, 234850), (100, 206668), (110, 187880), (112, 184525), (121, 170800), (122, 169400), (140, 147620), (154, 134200), (175, 118096), (176, 117425), (200, 103334), (220, 93940), (242, 85400), (244, 84700), (275, 75152), (280, 73810), (305, 67760), (308, 67100), (350, 59048), (385, 53680), (400, 51667), (427, 48400), (440, 46970), (484, 42700), (488, 42350), (550, 37576), (560, 36905), (605, 34160), (610, 33880), (616, 33550), (671, 30800), (700, 29524), (770, 26840), (847, 24400), (854, 24200), (880, 23485), (968, 21350), (976, 21175), (1100, 18788), (1210, 17080), (1220, 16940), (1232, 16775), (1342, 15400), (1400, 14762), (1525, 13552), (1540, 13420), (1694, 12200), (1708, 12100), (1925, 10736), (1936, 10675), (2135, 9680), (2200, 9394), (2420, 8540), (2440, 8470), (2684, 7700), (2800, 7381), (3025, 6832), (3050, 6776), (3080, 6710), (3355, 6160), (3388, 6100), (3416, 6050), (3850, 5368), (4235, 4880), (4270, 4840), (4400, 4697)]