20964818

素因数分解:

$2^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{7759}}^1$

素因数の和:7961

約数の個数: 16

約数和(自身を含む): 36130560

約数和(自身を除く): 15165742

約数列:

[1, 2, 7, 14, 193, 386, 1351, 2702, 7759, 15518, 54313, 108626, 1497487, 2994974, 10482409, 20964818]

約数ペア:

[(1, 20964818), (2, 10482409), (7, 2994974), (14, 1497487), (193, 108626), (386, 54313), (1351, 15518), (2702, 7759)]