18860961

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{20887}}^1$

素因数の和:20940

約数の個数: 16

約数和(自身を含む): 29410304

約数和(自身を除く): 10549343

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 20887, 62661, 146209, 438627, 898141, 2694423, 6286987, 18860961]

約数ペア:

[(1, 18860961), (3, 6286987), (7, 2694423), (21, 898141), (43, 438627), (129, 146209), (301, 62661), (903, 20887)]