21538407

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{15919}}^1$

素因数の和:15974

約数の個数: 16

約数和(自身を含む): 32094720

約数和(自身を除く): 10556313

約数列:

[1, 3, 11, 33, 41, 123, 451, 1353, 15919, 47757, 175109, 525327, 652679, 1958037, 7179469, 21538407]

約数ペア:

[(1, 21538407), (3, 7179469), (11, 1958037), (33, 652679), (41, 525327), (123, 175109), (451, 47757), (1353, 15919)]