21380117

素因数分解:

${\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{401}}^1$

素因数の和:580

約数の個数: 16

約数和(自身を含む): 24197184

約数和(自身を除く): 2817067

約数列:

[1, 11, 37, 131, 401, 407, 1441, 4411, 4847, 14837, 52531, 53317, 163207, 577841, 1943647, 21380117]

約数ペア:

[(1, 21380117), (11, 1943647), (37, 577841), (131, 163207), (401, 53317), (407, 52531), (1441, 14837), (4411, 4847)]