20208419

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{727}}^1$

素因数の和:783

約数の個数: 24

約数和(自身を含む): 26627328

約数和(自身を除く): 6418909

約数列:

[1, 7, 11, 19, 77, 133, 209, 361, 727, 1463, 2527, 3971, 5089, 7997, 13813, 27797, 55979, 96691, 151943, 262447, 1063601, 1837129, 2886917, 20208419]

約数ペア:

[(1, 20208419), (7, 2886917), (11, 1837129), (19, 1063601), (77, 262447), (133, 151943), (209, 96691), (361, 55979), (727, 27797), (1463, 13813), (2527, 7997), (3971, 5089)]