21107980377

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{71070641}}^1$

素因数の和:71070661

約数の個数: 16

約数和(自身を含む): 34113908160

約数和(自身を除く): 13005927783

約数列:

[1, 3, 9, 11, 27, 33, 99, 297, 71070641, 213211923, 639635769, 781777051, 1918907307, 2345331153, 7035993459, 21107980377]

約数ペア:

[(1, 21107980377), (3, 7035993459), (9, 2345331153), (11, 1918907307), (27, 781777051), (33, 639635769), (99, 213211923), (297, 71070641)]