18691509123

素因数分解:

$3^2\times 7^1\times {\mathrm{296690621}}^1$

素因数の和:296690634

約数の個数: 12

約数和(自身を含む): 30855824688

約数和(自身を除く): 12164315565

約数列:

[1, 3, 7, 9, 21, 63, 296690621, 890071863, 2076834347, 2670215589, 6230503041, 18691509123]

約数ペア:

[(1, 18691509123), (3, 6230503041), (7, 2670215589), (9, 2076834347), (21, 890071863), (63, 296690621)]