18691239

素因数分解:

$3^1\times 7^1\times {\mathrm{331}}^1\times {\mathrm{2689}}^1$

素因数の和:3030

約数の個数: 16

約数和(自身を含む): 28578560

約数和(自身を除く): 9887321

約数列:

[1, 3, 7, 21, 331, 993, 2317, 2689, 6951, 8067, 18823, 56469, 890059, 2670177, 6230413, 18691239]

約数ペア:

[(1, 18691239), (3, 6230413), (7, 2670177), (21, 890059), (331, 56469), (993, 18823), (2317, 8067), (2689, 6951)]