19701248

素因数分解:

$2^9\times 7^1\times {\mathrm{23}}^1\times {\mathrm{239}}^1$

素因数の和:287

約数の個数: 80

約数和(自身を含む): 47139840

約数和(自身を除く): 27438592

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 32, 46, 56, 64, 92, 112, 128, 161, 184, 224, 239, 256, 322, 368, 448, 478, 512, 644, 736, 896, 956, 1288, 1472, 1673, 1792, 1912, 2576, 2944, 3346, 3584, 3824, 5152, 5497, 5888, 6692, 7648, 10304, 10994, 11776, 13384, 15296, 20608, 21988, 26768, 30592, 38479, 41216, 43976, 53536, 61184, 76958, 82432, 87952, 107072, 122368, 153916, 175904, 214144, 307832, 351808, 428288, 615664, 703616, 856576, 1231328, 1407232, 2462656, 2814464, 4925312, 9850624, 19701248]

約数ペア:

[(1, 19701248), (2, 9850624), (4, 4925312), (7, 2814464), (8, 2462656), (14, 1407232), (16, 1231328), (23, 856576), (28, 703616), (32, 615664), (46, 428288), (56, 351808), (64, 307832), (92, 214144), (112, 175904), (128, 153916), (161, 122368), (184, 107072), (224, 87952), (239, 82432), (256, 76958), (322, 61184), (368, 53536), (448, 43976), (478, 41216), (512, 38479), (644, 30592), (736, 26768), (896, 21988), (956, 20608), (1288, 15296), (1472, 13384), (1673, 11776), (1792, 10994), (1912, 10304), (2576, 7648), (2944, 6692), (3346, 5888), (3584, 5497), (3824, 5152)]