20780354

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{47881}}^1$

素因数の和:47921

約数の個数: 16

約数和(自身を含む): 36773376

約数和(自身を除く): 15993022

約数列:

[1, 2, 7, 14, 31, 62, 217, 434, 47881, 95762, 335167, 670334, 1484311, 2968622, 10390177, 20780354]

約数ペア:

[(1, 20780354), (2, 10390177), (7, 2968622), (14, 1484311), (31, 670334), (62, 335167), (217, 95762), (434, 47881)]