21084745

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{523}}^1\times {\mathrm{733}}^1$

素因数の和:1272

約数の個数: 16

約数和(自身を含む): 27692352

約数和(自身を除く): 6607607

約数列:

[1, 5, 11, 55, 523, 733, 2615, 3665, 5753, 8063, 28765, 40315, 383359, 1916795, 4216949, 21084745]

約数ペア:

[(1, 21084745), (5, 4216949), (11, 1916795), (55, 383359), (523, 40315), (733, 28765), (2615, 8063), (3665, 5753)]