19721697

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{1471}}^1$

素因数の和:1624

約数の個数: 16

約数和(自身を含む): 27202560

約数和(自身を除く): 7480863

約数列:

[1, 3, 41, 109, 123, 327, 1471, 4413, 4469, 13407, 60311, 160339, 180933, 481017, 6573899, 19721697]

約数ペア:

[(1, 19721697), (3, 6573899), (41, 481017), (109, 180933), (123, 160339), (327, 60311), (1471, 13407), (4413, 4469)]