20881531

素因数分解:

${\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{337}}^1$

素因数の和:522

約数の個数: 16

約数和(自身を含む): 23557248

約数和(自身を除く): 2675717

約数列:

[1, 11, 43, 131, 337, 473, 1441, 3707, 5633, 14491, 44147, 61963, 159401, 485617, 1898321, 20881531]

約数ペア:

[(1, 20881531), (11, 1898321), (43, 485617), (131, 159401), (337, 61963), (473, 44147), (1441, 14491), (3707, 5633)]