21157631

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{241}}^1\times {\mathrm{347}}^1$

素因数の和:622

約数の個数: 16

約数和(自身を含む): 24254208

約数和(自身を除く): 3096577

約数列:

[1, 11, 23, 241, 253, 347, 2651, 3817, 5543, 7981, 60973, 83627, 87791, 919897, 1923421, 21157631]

約数ペア:

[(1, 21157631), (11, 1923421), (23, 919897), (241, 87791), (253, 83627), (347, 60973), (2651, 7981), (3817, 5543)]