19702144

素因数分解:

$2^7\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1999}}^1$

素因数の和:2031

約数の個数: 64

約数和(自身を含む): 48960000

約数和(自身を除く): 29257856

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 56, 64, 77, 88, 112, 128, 154, 176, 224, 308, 352, 448, 616, 704, 896, 1232, 1408, 1999, 2464, 3998, 4928, 7996, 9856, 13993, 15992, 21989, 27986, 31984, 43978, 55972, 63968, 87956, 111944, 127936, 153923, 175912, 223888, 255872, 307846, 351824, 447776, 615692, 703648, 895552, 1231384, 1407296, 1791104, 2462768, 2814592, 4925536, 9851072, 19702144]

約数ペア:

[(1, 19702144), (2, 9851072), (4, 4925536), (7, 2814592), (8, 2462768), (11, 1791104), (14, 1407296), (16, 1231384), (22, 895552), (28, 703648), (32, 615692), (44, 447776), (56, 351824), (64, 307846), (77, 255872), (88, 223888), (112, 175912), (128, 153923), (154, 127936), (176, 111944), (224, 87956), (308, 63968), (352, 55972), (448, 43978), (616, 31984), (704, 27986), (896, 21989), (1232, 15992), (1408, 13993), (1999, 9856), (2464, 7996), (3998, 4928)]