21127701

素因数分解:

$3^1\times 7^1\times {\mathrm{563}}^1\times {\mathrm{1787}}^1$

素因数の和:2360

約数の個数: 16

約数和(自身を含む): 32269824

約数和(自身を除く): 11142123

約数列:

[1, 3, 7, 21, 563, 1689, 1787, 3941, 5361, 11823, 12509, 37527, 1006081, 3018243, 7042567, 21127701]

約数ペア:

[(1, 21127701), (3, 7042567), (7, 3018243), (21, 1006081), (563, 37527), (1689, 12509), (1787, 11823), (3941, 5361)]