18885997

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{881}}^1$

素因数の和:1008

約数の個数: 16

約数和(自身を含む): 21781872

約数和(自身を除く): 2895875

約数列:

[1, 13, 17, 97, 221, 881, 1261, 1649, 11453, 14977, 21437, 85457, 194701, 1110941, 1452769, 18885997]

約数ペア:

[(1, 18885997), (13, 1452769), (17, 1110941), (97, 194701), (221, 85457), (881, 21437), (1261, 14977), (1649, 11453)]