20805708

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{89}}^1$

素因数の和:148

約数の個数: 144

約数和(自身を含む): 64350720

約数和(自身を除く): 43545012

約数列:

[1, 2, 3, 4, 6, 7, 11, 12, 14, 21, 22, 23, 28, 33, 42, 44, 46, 66, 69, 77, 84, 89, 92, 121, 132, 138, 154, 161, 178, 231, 242, 253, 267, 276, 308, 322, 356, 363, 462, 483, 484, 506, 534, 623, 644, 726, 759, 847, 924, 966, 979, 1012, 1068, 1246, 1452, 1518, 1694, 1771, 1869, 1932, 1958, 2047, 2492, 2541, 2783, 2937, 3036, 3388, 3542, 3738, 3916, 4094, 5082, 5313, 5566, 5874, 6141, 6853, 7084, 7476, 8188, 8349, 10164, 10626, 10769, 11132, 11748, 12282, 13706, 14329, 16698, 19481, 20559, 21252, 21538, 22517, 24564, 27412, 28658, 32307, 33396, 38962, 41118, 42987, 43076, 45034, 57316, 58443, 64614, 67551, 75383, 77924, 82236, 85974, 90068, 116886, 129228, 135102, 150766, 157619, 171948, 226149, 233772, 247687, 270204, 301532, 315238, 452298, 472857, 495374, 630476, 743061, 904596, 945714, 990748, 1486122, 1733809, 1891428, 2972244, 3467618, 5201427, 6935236, 10402854, 20805708]

約数ペア:

[(1, 20805708), (2, 10402854), (3, 6935236), (4, 5201427), (6, 3467618), (7, 2972244), (11, 1891428), (12, 1733809), (14, 1486122), (21, 990748), (22, 945714), (23, 904596), (28, 743061), (33, 630476), (42, 495374), (44, 472857), (46, 452298), (66, 315238), (69, 301532), (77, 270204), (84, 247687), (89, 233772), (92, 226149), (121, 171948), (132, 157619), (138, 150766), (154, 135102), (161, 129228), (178, 116886), (231, 90068), (242, 85974), (253, 82236), (267, 77924), (276, 75383), (308, 67551), (322, 64614), (356, 58443), (363, 57316), (462, 45034), (483, 43076), (484, 42987), (506, 41118), (534, 38962), (623, 33396), (644, 32307), (726, 28658), (759, 27412), (847, 24564), (924, 22517), (966, 21538), (979, 21252), (1012, 20559), (1068, 19481), (1246, 16698), (1452, 14329), (1518, 13706), (1694, 12282), (1771, 11748), (1869, 11132), (1932, 10769), (1958, 10626), (2047, 10164), (2492, 8349), (2541, 8188), (2783, 7476), (2937, 7084), (3036, 6853), (3388, 6141), (3542, 5874), (3738, 5566), (3916, 5313), (4094, 5082)]