21041949

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{311}}^1\times {\mathrm{1187}}^1$

素因数の和:1520

約数の個数: 16

約数和(自身を含む): 29652480

約数和(自身を除く): 8610531

約数列:

[1, 3, 19, 57, 311, 933, 1187, 3561, 5909, 17727, 22553, 67659, 369157, 1107471, 7013983, 21041949]

約数ペア:

[(1, 21041949), (3, 7013983), (19, 1107471), (57, 369157), (311, 67659), (933, 22553), (1187, 17727), (3561, 5909)]