20974712

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{241}}^1$

素因数の和:324

約数の個数: 64

約数和(自身を含む): 45999360

約数和(自身を除く): 25024648

約数列:

[1, 2, 4, 8, 11, 22, 23, 43, 44, 46, 86, 88, 92, 172, 184, 241, 253, 344, 473, 482, 506, 946, 964, 989, 1012, 1892, 1928, 1978, 2024, 2651, 3784, 3956, 5302, 5543, 7912, 10363, 10604, 10879, 11086, 20726, 21208, 21758, 22172, 41452, 43516, 44344, 60973, 82904, 87032, 113993, 121946, 227986, 238349, 243892, 455972, 476698, 487784, 911944, 953396, 1906792, 2621839, 5243678, 10487356, 20974712]

約数ペア:

[(1, 20974712), (2, 10487356), (4, 5243678), (8, 2621839), (11, 1906792), (22, 953396), (23, 911944), (43, 487784), (44, 476698), (46, 455972), (86, 243892), (88, 238349), (92, 227986), (172, 121946), (184, 113993), (241, 87032), (253, 82904), (344, 60973), (473, 44344), (482, 43516), (506, 41452), (946, 22172), (964, 21758), (989, 21208), (1012, 20726), (1892, 11086), (1928, 10879), (1978, 10604), (2024, 10363), (2651, 7912), (3784, 5543), (3956, 5302)]