20395760

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{43}}^1$

素因数の和:92

約数の個数: 180

約数和(自身を含む): 62042904

約数和(自身を除く): 41647144

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 43, 44, 49, 55, 56, 70, 77, 80, 86, 88, 98, 110, 112, 121, 140, 154, 172, 176, 196, 215, 220, 242, 245, 280, 301, 308, 344, 385, 392, 430, 440, 473, 484, 490, 539, 560, 602, 605, 616, 688, 770, 784, 847, 860, 880, 946, 968, 980, 1078, 1204, 1210, 1232, 1505, 1540, 1694, 1720, 1892, 1936, 1960, 2107, 2156, 2365, 2408, 2420, 2695, 3010, 3080, 3311, 3388, 3440, 3784, 3920, 4214, 4235, 4312, 4730, 4816, 4840, 5203, 5390, 5929, 6020, 6160, 6622, 6776, 7568, 8428, 8470, 8624, 9460, 9680, 10406, 10535, 10780, 11858, 12040, 13244, 13552, 16555, 16856, 16940, 18920, 20812, 21070, 21560, 23177, 23716, 24080, 26015, 26488, 29645, 33110, 33712, 33880, 36421, 37840, 41624, 42140, 43120, 46354, 47432, 52030, 52976, 59290, 66220, 67760, 72842, 83248, 84280, 92708, 94864, 104060, 115885, 118580, 132440, 145684, 168560, 182105, 185416, 208120, 231770, 237160, 254947, 264880, 291368, 364210, 370832, 416240, 463540, 474320, 509894, 582736, 728420, 927080, 1019788, 1274735, 1456840, 1854160, 2039576, 2549470, 2913680, 4079152, 5098940, 10197880, 20395760]

約数ペア:

[(1, 20395760), (2, 10197880), (4, 5098940), (5, 4079152), (7, 2913680), (8, 2549470), (10, 2039576), (11, 1854160), (14, 1456840), (16, 1274735), (20, 1019788), (22, 927080), (28, 728420), (35, 582736), (40, 509894), (43, 474320), (44, 463540), (49, 416240), (55, 370832), (56, 364210), (70, 291368), (77, 264880), (80, 254947), (86, 237160), (88, 231770), (98, 208120), (110, 185416), (112, 182105), (121, 168560), (140, 145684), (154, 132440), (172, 118580), (176, 115885), (196, 104060), (215, 94864), (220, 92708), (242, 84280), (245, 83248), (280, 72842), (301, 67760), (308, 66220), (344, 59290), (385, 52976), (392, 52030), (430, 47432), (440, 46354), (473, 43120), (484, 42140), (490, 41624), (539, 37840), (560, 36421), (602, 33880), (605, 33712), (616, 33110), (688, 29645), (770, 26488), (784, 26015), (847, 24080), (860, 23716), (880, 23177), (946, 21560), (968, 21070), (980, 20812), (1078, 18920), (1204, 16940), (1210, 16856), (1232, 16555), (1505, 13552), (1540, 13244), (1694, 12040), (1720, 11858), (1892, 10780), (1936, 10535), (1960, 10406), (2107, 9680), (2156, 9460), (2365, 8624), (2408, 8470), (2420, 8428), (2695, 7568), (3010, 6776), (3080, 6622), (3311, 6160), (3388, 6020), (3440, 5929), (3784, 5390), (3920, 5203), (4214, 4840), (4235, 4816), (4312, 4730)]