20405792

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1999}}^1$

素因数の和:2049

約数の個数: 48

約数和(自身を含む): 45360000

約数和(自身を除く): 24954208

約数列:

[1, 2, 4, 8, 11, 16, 22, 29, 32, 44, 58, 88, 116, 176, 232, 319, 352, 464, 638, 928, 1276, 1999, 2552, 3998, 5104, 7996, 10208, 15992, 21989, 31984, 43978, 57971, 63968, 87956, 115942, 175912, 231884, 351824, 463768, 637681, 703648, 927536, 1275362, 1855072, 2550724, 5101448, 10202896, 20405792]

約数ペア:

[(1, 20405792), (2, 10202896), (4, 5101448), (8, 2550724), (11, 1855072), (16, 1275362), (22, 927536), (29, 703648), (32, 637681), (44, 463768), (58, 351824), (88, 231884), (116, 175912), (176, 115942), (232, 87956), (319, 63968), (352, 57971), (464, 43978), (638, 31984), (928, 21989), (1276, 15992), (1999, 10208), (2552, 7996), (3998, 5104)]