18945339

素因数分解:

$3^1\times 7^1\times {\mathrm{271}}^1\times {\mathrm{3329}}^1$

素因数の和:3610

約数の個数: 16

約数和(自身を含む): 28984320

約数和(自身を除く): 10038981

約数列:

[1, 3, 7, 21, 271, 813, 1897, 3329, 5691, 9987, 23303, 69909, 902159, 2706477, 6315113, 18945339]

約数ペア:

[(1, 18945339), (3, 6315113), (7, 2706477), (21, 902159), (271, 69909), (813, 23303), (1897, 9987), (3329, 5691)]