21712278

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{516959}}^1$

素因数の和:516971

約数の個数: 16

約数和(自身を含む): 49628160

約数和(自身を除く): 27915882

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 516959, 1033918, 1550877, 3101754, 3618713, 7237426, 10856139, 21712278]

約数ペア:

[(1, 21712278), (2, 10856139), (3, 7237426), (6, 3618713), (7, 3101754), (14, 1550877), (21, 1033918), (42, 516959)]