28131515

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{2381}}^1$

素因数の和:2542

約数の個数: 16

約数和(自身を含む): 36015840

約数和(自身を除く): 7884325

約数列:

[1, 5, 17, 85, 139, 695, 2363, 2381, 11815, 11905, 40477, 202385, 330959, 1654795, 5626303, 28131515]

約数ペア:

[(1, 28131515), (5, 5626303), (17, 1654795), (85, 330959), (139, 202385), (695, 40477), (2363, 11905), (2381, 11815)]