21095978

素因数分解:

$2^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1\times {\mathrm{1103}}^1$

素因数の和:1309

約数の個数: 16

約数和(自身を含む): 32351616

約数和(自身を除く): 11255638

約数列:

[1, 2, 73, 131, 146, 262, 1103, 2206, 9563, 19126, 80519, 144493, 161038, 288986, 10547989, 21095978]

約数ペア:

[(1, 21095978), (2, 10547989), (73, 288986), (131, 161038), (146, 144493), (262, 80519), (1103, 19126), (2206, 9563)]