20557956

素因数分解:

$2^2\times 3^1\times {\mathrm{43}}^1\times {\mathrm{39841}}^1$

素因数の和:39891

約数の個数: 24

約数和(自身を含む): 49085344

約数和(自身を除く): 28527388

約数列:

[1, 2, 3, 4, 6, 12, 43, 86, 129, 172, 258, 516, 39841, 79682, 119523, 159364, 239046, 478092, 1713163, 3426326, 5139489, 6852652, 10278978, 20557956]

約数ペア:

[(1, 20557956), (2, 10278978), (3, 6852652), (4, 5139489), (6, 3426326), (12, 1713163), (43, 478092), (86, 239046), (129, 159364), (172, 119523), (258, 79682), (516, 39841)]