19871299

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{173}}^1\times {\mathrm{269}}^1$

素因数の和:510

約数の個数: 16

約数和(自身を含む): 23302080

約数和(自身を除く): 3430781

約数列:

[1, 7, 61, 173, 269, 427, 1211, 1883, 10553, 16409, 46537, 73871, 114863, 325759, 2838757, 19871299]

約数ペア:

[(1, 19871299), (7, 2838757), (61, 325759), (173, 114863), (269, 73871), (427, 46537), (1211, 16409), (1883, 10553)]