1028156840

素因数分解:

$2^3\times 5^1\times {\mathrm{25703921}}^1$

素因数の和:25703932

約数の個数: 16

約数和(自身を含む): 2313352980

約数和(自身を除く): 1285196140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 25703921, 51407842, 102815684, 128519605, 205631368, 257039210, 514078420, 1028156840]

約数ペア:

[(1, 1028156840), (2, 514078420), (4, 257039210), (5, 205631368), (8, 128519605), (10, 102815684), (20, 51407842), (40, 25703921)]