21279687

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{49603}}^1$

素因数の和:49630

約数の個数: 16

約数和(自身を含む): 33333888

約数和(自身を除く): 12054201

約数列:

[1, 3, 11, 13, 33, 39, 143, 429, 49603, 148809, 545633, 644839, 1636899, 1934517, 7093229, 21279687]

約数ペア:

[(1, 21279687), (3, 7093229), (11, 1934517), (13, 1636899), (33, 644839), (39, 545633), (143, 148809), (429, 49603)]