20679988

素因数分解:

$2^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{9349}}^1$

素因数の和:9439

約数の個数: 24

約数和(自身を含む): 41888000

約数和(自身を除く): 21208012

約数列:

[1, 2, 4, 7, 14, 28, 79, 158, 316, 553, 1106, 2212, 9349, 18698, 37396, 65443, 130886, 261772, 738571, 1477142, 2954284, 5169997, 10339994, 20679988]

約数ペア:

[(1, 20679988), (2, 10339994), (4, 5169997), (7, 2954284), (14, 1477142), (28, 738571), (79, 261772), (158, 130886), (316, 65443), (553, 37396), (1106, 18698), (2212, 9349)]