20931806

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{78691}}^1$

素因数の和:78719

約数の個数: 16

約数和(自身を含む): 37772160

約数和(自身を除く): 16840354

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 78691, 157382, 550837, 1101674, 1495129, 2990258, 10465903, 20931806]

約数ペア:

[(1, 20931806), (2, 10465903), (7, 2990258), (14, 1495129), (19, 1101674), (38, 550837), (133, 157382), (266, 78691)]