21031437

素因数分解:

$3^1\times 7^2\times {\mathrm{173}}^1\times {\mathrm{827}}^1$

素因数の和:1017

約数の個数: 24

約数和(自身を含む): 32848416

約数和(自身を除く): 11816979

約数列:

[1, 3, 7, 21, 49, 147, 173, 519, 827, 1211, 2481, 3633, 5789, 8477, 17367, 25431, 40523, 121569, 143071, 429213, 1001497, 3004491, 7010479, 21031437]

約数ペア:

[(1, 21031437), (3, 7010479), (7, 3004491), (21, 1001497), (49, 429213), (147, 143071), (173, 121569), (519, 40523), (827, 25431), (1211, 17367), (2481, 8477), (3633, 5789)]