71781584

素因数分解:

$2^4\times 7^1\times {\mathrm{640907}}^1$

素因数の和:640922

約数の個数: 20

約数和(自身を含む): 158945184

約数和(自身を除く): 87163600

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 640907, 1281814, 2563628, 4486349, 5127256, 8972698, 10254512, 17945396, 35890792, 71781584]

約数ペア:

[(1, 71781584), (2, 35890792), (4, 17945396), (7, 10254512), (8, 8972698), (14, 5127256), (16, 4486349), (28, 2563628), (56, 1281814), (112, 640907)]