21271911

素因数分解:

$3^1\times {\mathrm{113}}^1\times {\mathrm{131}}^1\times {\mathrm{479}}^1$

素因数の和:726

約数の個数: 16

約数和(自身を含む): 28892160

約数和(自身を除く): 7620249

約数列:

[1, 3, 113, 131, 339, 393, 479, 1437, 14803, 44409, 54127, 62749, 162381, 188247, 7090637, 21271911]

約数ペア:

[(1, 21271911), (3, 7090637), (113, 188247), (131, 162381), (339, 62749), (393, 54127), (479, 44409), (1437, 14803)]