20979546

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{71359}}^1$

素因数の和:71378

約数の個数: 24

約数和(自身を含む): 48810240

約数和(自身を除く): 27830694

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 98, 147, 294, 71359, 142718, 214077, 428154, 499513, 999026, 1498539, 2997078, 3496591, 6993182, 10489773, 20979546]

約数ペア:

[(1, 20979546), (2, 10489773), (3, 6993182), (6, 3496591), (7, 2997078), (14, 1498539), (21, 999026), (42, 499513), (49, 428154), (98, 214077), (147, 142718), (294, 71359)]