21438021

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{5749}}^1$

素因数の和:5876

約数の個数: 16

約数和(自身を含む): 31464000

約数和(自身を除く): 10025979

約数列:

[1, 3, 11, 33, 113, 339, 1243, 3729, 5749, 17247, 63239, 189717, 649637, 1948911, 7146007, 21438021]

約数ペア:

[(1, 21438021), (3, 7146007), (11, 1948911), (33, 649637), (113, 189717), (339, 63239), (1243, 17247), (3729, 5749)]