19911554

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{347}}^1\times {\mathrm{2207}}^1$

素因数の和:2569

約数の個数: 16

約数和(自身を含む): 32272128

約数和(自身を除く): 12360574

約数列:

[1, 2, 13, 26, 347, 694, 2207, 4414, 4511, 9022, 28691, 57382, 765829, 1531658, 9955777, 19911554]

約数ペア:

[(1, 19911554), (2, 9955777), (13, 1531658), (26, 765829), (347, 57382), (694, 28691), (2207, 9022), (4414, 4511)]