639232408

素因数分解:

$2^3\times {\mathrm{157}}^1\times {\mathrm{508943}}^1$

素因数の和:509106

約数の個数: 16

約数和(自身を含む): 1206197280

約数和(自身を除く): 566964872

約数列:

[1, 2, 4, 8, 157, 314, 628, 1256, 508943, 1017886, 2035772, 4071544, 79904051, 159808102, 319616204, 639232408]

約数ペア:

[(1, 639232408), (2, 319616204), (4, 159808102), (8, 79904051), (157, 4071544), (314, 2035772), (628, 1017886), (1256, 508943)]