21031081

素因数分解:

${\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1\times {\mathrm{257}}^1$

素因数の和:408

約数の個数: 16

約数和(自身を含む): 22910400

約数和(自身を除く): 1879319

約数列:

[1, 19, 59, 73, 257, 1121, 1387, 4307, 4883, 15163, 18761, 81833, 288097, 356459, 1106899, 21031081]

約数ペア:

[(1, 21031081), (19, 1106899), (59, 356459), (73, 288097), (257, 81833), (1121, 18761), (1387, 15163), (4307, 4883)]