20718432

素因数分解:

$2^5\times 3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1$

素因数の和:305

約数の個数: 144

約数和(自身を含む): 69189120

約数和(自身を除く): 48470688

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 32, 36, 42, 43, 48, 56, 63, 72, 84, 86, 96, 112, 126, 129, 144, 168, 172, 224, 239, 252, 258, 288, 301, 336, 344, 387, 478, 504, 516, 602, 672, 688, 717, 774, 903, 956, 1008, 1032, 1204, 1376, 1434, 1548, 1673, 1806, 1912, 2016, 2064, 2151, 2408, 2709, 2868, 3096, 3346, 3612, 3824, 4128, 4302, 4816, 5019, 5418, 5736, 6192, 6692, 7224, 7648, 8604, 9632, 10038, 10277, 10836, 11472, 12384, 13384, 14448, 15057, 17208, 20076, 20554, 21672, 22944, 26768, 28896, 30114, 30831, 34416, 40152, 41108, 43344, 53536, 60228, 61662, 68832, 71939, 80304, 82216, 86688, 92493, 120456, 123324, 143878, 160608, 164432, 184986, 215817, 240912, 246648, 287756, 328864, 369972, 431634, 481824, 493296, 575512, 647451, 739944, 863268, 986592, 1151024, 1294902, 1479888, 1726536, 2302048, 2589804, 2959776, 3453072, 5179608, 6906144, 10359216, 20718432]

約数ペア:

[(1, 20718432), (2, 10359216), (3, 6906144), (4, 5179608), (6, 3453072), (7, 2959776), (8, 2589804), (9, 2302048), (12, 1726536), (14, 1479888), (16, 1294902), (18, 1151024), (21, 986592), (24, 863268), (28, 739944), (32, 647451), (36, 575512), (42, 493296), (43, 481824), (48, 431634), (56, 369972), (63, 328864), (72, 287756), (84, 246648), (86, 240912), (96, 215817), (112, 184986), (126, 164432), (129, 160608), (144, 143878), (168, 123324), (172, 120456), (224, 92493), (239, 86688), (252, 82216), (258, 80304), (288, 71939), (301, 68832), (336, 61662), (344, 60228), (387, 53536), (478, 43344), (504, 41108), (516, 40152), (602, 34416), (672, 30831), (688, 30114), (717, 28896), (774, 26768), (903, 22944), (956, 21672), (1008, 20554), (1032, 20076), (1204, 17208), (1376, 15057), (1434, 14448), (1548, 13384), (1673, 12384), (1806, 11472), (1912, 10836), (2016, 10277), (2064, 10038), (2151, 9632), (2408, 8604), (2709, 7648), (2868, 7224), (3096, 6692), (3346, 6192), (3612, 5736), (3824, 5418), (4128, 5019), (4302, 4816)]