19661764

素因数分解:

$2^2\times {\mathrm{61}}^2\times {\mathrm{1321}}^1$

素因数の和:1447

約数の個数: 18

約数和(自身を含む): 35007882

約数和(自身を除く): 15346118

約数列:

[1, 2, 4, 61, 122, 244, 1321, 2642, 3721, 5284, 7442, 14884, 80581, 161162, 322324, 4915441, 9830882, 19661764]

約数ペア:

[(1, 19661764), (2, 9830882), (4, 4915441), (61, 322324), (122, 161162), (244, 80581), (1321, 14884), (2642, 7442), (3721, 5284)]