18940978

素因数分解:

$2^1\times 7^1\times {\mathrm{659}}^1\times {\mathrm{2053}}^1$

素因数の和:2721

約数の個数: 16

約数和(自身を含む): 32535360

約数和(自身を除く): 13594382

約数列:

[1, 2, 7, 14, 659, 1318, 2053, 4106, 4613, 9226, 14371, 28742, 1352927, 2705854, 9470489, 18940978]

約数ペア:

[(1, 18940978), (2, 9470489), (7, 2705854), (14, 1352927), (659, 28742), (1318, 14371), (2053, 9226), (4106, 4613)]