640304

素因数分解:

$2^4\times 7^1\times {\mathrm{5717}}^1$

素因数の和:5732

約数の個数: 20

約数和(自身を含む): 1418064

約数和(自身を除く): 777760

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 5717, 11434, 22868, 40019, 45736, 80038, 91472, 160076, 320152, 640304]

約数ペア:

[(1, 640304), (2, 320152), (4, 160076), (7, 91472), (8, 80038), (14, 45736), (16, 40019), (28, 22868), (56, 11434), (112, 5717)]