20181279989

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{4806211}}^1$

素因数の和:4806260

約数の個数: 16

約数和(自身を含む): 24223308480

約数和(自身を除く): 4042028491

約数列:

[1, 13, 17, 19, 221, 247, 323, 4199, 4806211, 62480743, 81705587, 91318009, 1062172631, 1187134117, 1552406153, 20181279989]

約数ペア:

[(1, 20181279989), (13, 1552406153), (17, 1187134117), (19, 1062172631), (221, 91318009), (247, 81705587), (323, 62480743), (4199, 4806211)]