21208461

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{379}}^1\times {\mathrm{811}}^1$

素因数の和:1216

約数の個数: 16

約数和(自身を含む): 29621760

約数和(自身を除く): 8413299

約数列:

[1, 3, 23, 69, 379, 811, 1137, 2433, 8717, 18653, 26151, 55959, 307369, 922107, 7069487, 21208461]

約数ペア:

[(1, 21208461), (3, 7069487), (23, 922107), (69, 307369), (379, 55959), (811, 26151), (1137, 18653), (2433, 8717)]