164781568

素因数分解:

$2^9\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1999}}^1$

素因数の和:2047

約数の個数: 80

約数和(自身を含む): 392832000

約数和(自身を除く): 228050432

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 32, 46, 56, 64, 92, 112, 128, 161, 184, 224, 256, 322, 368, 448, 512, 644, 736, 896, 1288, 1472, 1792, 1999, 2576, 2944, 3584, 3998, 5152, 5888, 7996, 10304, 11776, 13993, 15992, 20608, 27986, 31984, 41216, 45977, 55972, 63968, 82432, 91954, 111944, 127936, 183908, 223888, 255872, 321839, 367816, 447776, 511744, 643678, 735632, 895552, 1023488, 1287356, 1471264, 1791104, 2574712, 2942528, 3582208, 5149424, 5885056, 7164416, 10298848, 11770112, 20597696, 23540224, 41195392, 82390784, 164781568]

約数ペア:

[(1, 164781568), (2, 82390784), (4, 41195392), (7, 23540224), (8, 20597696), (14, 11770112), (16, 10298848), (23, 7164416), (28, 5885056), (32, 5149424), (46, 3582208), (56, 2942528), (64, 2574712), (92, 1791104), (112, 1471264), (128, 1287356), (161, 1023488), (184, 895552), (224, 735632), (256, 643678), (322, 511744), (368, 447776), (448, 367816), (512, 321839), (644, 255872), (736, 223888), (896, 183908), (1288, 127936), (1472, 111944), (1792, 91954), (1999, 82432), (2576, 63968), (2944, 55972), (3584, 45977), (3998, 41216), (5152, 31984), (5888, 27986), (7996, 20608), (10304, 15992), (11776, 13993)]