20928788

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{271}}^1\times {\mathrm{449}}^1$

素因数の和:767

約数の個数: 24

約数和(自身を含む): 37699200

約数和(自身を除く): 16770412

約数列:

[1, 2, 4, 43, 86, 172, 271, 449, 542, 898, 1084, 1796, 11653, 19307, 23306, 38614, 46612, 77228, 121679, 243358, 486716, 5232197, 10464394, 20928788]

約数ペア:

[(1, 20928788), (2, 10464394), (4, 5232197), (43, 486716), (86, 243358), (172, 121679), (271, 77228), (449, 46612), (542, 38614), (898, 23306), (1084, 19307), (1796, 11653)]