81647536

素因数分解:

$2^4\times {\mathrm{157}}^1\times {\mathrm{32503}}^1$

素因数の和:32668

約数の個数: 20

約数和(自身を含む): 159204592

約数和(自身を除く): 77557056

約数列:

[1, 2, 4, 8, 16, 157, 314, 628, 1256, 2512, 32503, 65006, 130012, 260024, 520048, 5102971, 10205942, 20411884, 40823768, 81647536]

約数ペア:

[(1, 81647536), (2, 40823768), (4, 20411884), (8, 10205942), (16, 5102971), (157, 520048), (314, 260024), (628, 130012), (1256, 65006), (2512, 32503)]