81379286

素因数分解:

$2^1\times {\mathrm{89}}^1\times {\mathrm{281}}^1\times {\mathrm{1627}}^1$

素因数の和:1999

約数の個数: 16

約数和(自身を含む): 123955920

約数和(自身を除く): 42576634

約数列:

[1, 2, 89, 178, 281, 562, 1627, 3254, 25009, 50018, 144803, 289606, 457187, 914374, 40689643, 81379286]

約数ペア:

[(1, 81379286), (2, 40689643), (89, 914374), (178, 457187), (281, 289606), (562, 144803), (1627, 50018), (3254, 25009)]