21491769

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{349}}^1\times {\mathrm{1579}}^1$

素因数の和:1944

約数の個数: 16

約数和(自身を含む): 30968000

約数和(自身を除く): 9476231

約数列:

[1, 3, 13, 39, 349, 1047, 1579, 4537, 4737, 13611, 20527, 61581, 551071, 1653213, 7163923, 21491769]

約数ペア:

[(1, 21491769), (3, 7163923), (13, 1653213), (39, 551071), (349, 61581), (1047, 20527), (1579, 13611), (4537, 4737)]