20887419

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{14009}}^1$

素因数の和:14090

約数の個数: 16

約数和(自身を含む): 32279040

約数和(自身を除く): 11391621

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 14009, 42027, 98063, 294189, 994639, 2983917, 6962473, 20887419]

約数ペア:

[(1, 20887419), (3, 6962473), (7, 2983917), (21, 994639), (71, 294189), (213, 98063), (497, 42027), (1491, 14009)]