18939219

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{419}}^1$

素因数の和:515

約数の個数: 32

約数和(自身を含む): 29164800

約数和(自身を除く): 10225581

約数列:

[1, 3, 13, 19, 39, 57, 61, 183, 247, 419, 741, 793, 1159, 1257, 2379, 3477, 5447, 7961, 15067, 16341, 23883, 25559, 45201, 76677, 103493, 310479, 332267, 485621, 996801, 1456863, 6313073, 18939219]

約数ペア:

[(1, 18939219), (3, 6313073), (13, 1456863), (19, 996801), (39, 485621), (57, 332267), (61, 310479), (183, 103493), (247, 76677), (419, 45201), (741, 25559), (793, 23883), (1159, 16341), (1257, 15067), (2379, 7961), (3477, 5447)]