19915554

素因数分解:

$2^1\times 3^1\times {\mathrm{353}}^1\times {\mathrm{9403}}^1$

素因数の和:9761

約数の個数: 16

約数和(自身を含む): 39948192

約数和(自身を除く): 20032638

約数列:

[1, 2, 3, 6, 353, 706, 1059, 2118, 9403, 18806, 28209, 56418, 3319259, 6638518, 9957777, 19915554]

約数ペア:

[(1, 19915554), (2, 9957777), (3, 6638518), (6, 3319259), (353, 56418), (706, 28209), (1059, 18806), (2118, 9403)]