666939

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{349}}^1$

素因数の和:379

約数の個数: 24

約数和(自身を含む): 1117200

約数和(自身を除く): 450261

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 349, 637, 1047, 1911, 2443, 4537, 7329, 13611, 17101, 31759, 51303, 95277, 222313, 666939]

約数ペア:

[(1, 666939), (3, 222313), (7, 95277), (13, 51303), (21, 31759), (39, 17101), (49, 13611), (91, 7329), (147, 4537), (273, 2443), (349, 1911), (637, 1047)]