208047021

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{269}}^1\times {\mathrm{2833}}^1$

素因数の和:3125

約数の個数: 32

約数和(自身を含む): 342800640

約数和(自身を除く): 134753619

約数列:

[1, 3, 7, 13, 21, 39, 91, 269, 273, 807, 1883, 2833, 3497, 5649, 8499, 10491, 19831, 24479, 36829, 59493, 73437, 110487, 257803, 762077, 773409, 2286231, 5334539, 9907001, 16003617, 29721003, 69349007, 208047021]

約数ペア:

[(1, 208047021), (3, 69349007), (7, 29721003), (13, 16003617), (21, 9907001), (39, 5334539), (91, 2286231), (269, 773409), (273, 762077), (807, 257803), (1883, 110487), (2833, 73437), (3497, 59493), (5649, 36829), (8499, 24479), (10491, 19831)]