21266905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{9431}}^1$

素因数の和:9488

約数の個数: 16

約数和(自身を含む): 28522368

約数和(自身を除く): 7255463

約数列:

[1, 5, 11, 41, 55, 205, 451, 2255, 9431, 47155, 103741, 386671, 518705, 1933355, 4253381, 21266905]

約数ペア:

[(1, 21266905), (5, 4253381), (11, 1933355), (41, 518705), (55, 386671), (205, 103741), (451, 47155), (2255, 9431)]