21409168

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{1181}}^1$

素因数の和:1303

約数の個数: 40

約数和(自身を含む): 45729216

約数和(自身を除く): 24320048

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 103, 176, 206, 412, 824, 1133, 1181, 1648, 2266, 2362, 4532, 4724, 9064, 9448, 12991, 18128, 18896, 25982, 51964, 103928, 121643, 207856, 243286, 486572, 973144, 1338073, 1946288, 2676146, 5352292, 10704584, 21409168]

約数ペア:

[(1, 21409168), (2, 10704584), (4, 5352292), (8, 2676146), (11, 1946288), (16, 1338073), (22, 973144), (44, 486572), (88, 243286), (103, 207856), (176, 121643), (206, 103928), (412, 51964), (824, 25982), (1133, 18896), (1181, 18128), (1648, 12991), (2266, 9448), (2362, 9064), (4532, 4724)]