20690607

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{13877}}^1$

素因数の和:13958

約数の個数: 16

約数和(自身を含む): 31974912

約数和(自身を除く): 11284305

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 13877, 41631, 97139, 291417, 985267, 2955801, 6896869, 20690607]

約数ペア:

[(1, 20690607), (3, 6896869), (7, 2955801), (21, 985267), (71, 291417), (213, 97139), (497, 41631), (1491, 13877)]