20905344

素因数分解:

$2^7\times 3^3\times {\mathrm{23}}^1\times {\mathrm{263}}^1$

素因数の和:309

約数の個数: 128

約数和(自身を含む): 64627200

約数和(自身を除く): 43721856

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 23, 24, 27, 32, 36, 46, 48, 54, 64, 69, 72, 92, 96, 108, 128, 138, 144, 184, 192, 207, 216, 263, 276, 288, 368, 384, 414, 432, 526, 552, 576, 621, 736, 789, 828, 864, 1052, 1104, 1152, 1242, 1472, 1578, 1656, 1728, 2104, 2208, 2367, 2484, 2944, 3156, 3312, 3456, 4208, 4416, 4734, 4968, 6049, 6312, 6624, 7101, 8416, 8832, 9468, 9936, 12098, 12624, 13248, 14202, 16832, 18147, 18936, 19872, 24196, 25248, 26496, 28404, 33664, 36294, 37872, 39744, 48392, 50496, 54441, 56808, 72588, 75744, 79488, 96784, 100992, 108882, 113616, 145176, 151488, 163323, 193568, 217764, 227232, 290352, 302976, 326646, 387136, 435528, 454464, 580704, 653292, 774272, 871056, 908928, 1161408, 1306584, 1742112, 2322816, 2613168, 3484224, 5226336, 6968448, 10452672, 20905344]

約数ペア:

[(1, 20905344), (2, 10452672), (3, 6968448), (4, 5226336), (6, 3484224), (8, 2613168), (9, 2322816), (12, 1742112), (16, 1306584), (18, 1161408), (23, 908928), (24, 871056), (27, 774272), (32, 653292), (36, 580704), (46, 454464), (48, 435528), (54, 387136), (64, 326646), (69, 302976), (72, 290352), (92, 227232), (96, 217764), (108, 193568), (128, 163323), (138, 151488), (144, 145176), (184, 113616), (192, 108882), (207, 100992), (216, 96784), (263, 79488), (276, 75744), (288, 72588), (368, 56808), (384, 54441), (414, 50496), (432, 48392), (526, 39744), (552, 37872), (576, 36294), (621, 33664), (736, 28404), (789, 26496), (828, 25248), (864, 24196), (1052, 19872), (1104, 18936), (1152, 18147), (1242, 16832), (1472, 14202), (1578, 13248), (1656, 12624), (1728, 12098), (2104, 9936), (2208, 9468), (2367, 8832), (2484, 8416), (2944, 7101), (3156, 6624), (3312, 6312), (3456, 6049), (4208, 4968), (4416, 4734)]