21198287

素因数分解:

${\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1\times {\mathrm{367}}^1$

素因数の和:526

約数の個数: 16

約数和(自身を含む): 23846400

約数和(自身を除く): 2648113

約数列:

[1, 11, 59, 89, 367, 649, 979, 4037, 5251, 21653, 32663, 57761, 238183, 359293, 1927117, 21198287]

約数ペア:

[(1, 21198287), (11, 1927117), (59, 359293), (89, 238183), (367, 57761), (649, 32663), (979, 21653), (4037, 5251)]