28781081

素因数分解:

$7^2\times {\mathrm{61}}^1\times {\mathrm{9629}}^1$

素因数の和:9704

約数の個数: 12

約数和(自身を含む): 34032420

約数和(自身を除く): 5251339

約数列:

[1, 7, 49, 61, 427, 2989, 9629, 67403, 471821, 587369, 4111583, 28781081]

約数ペア:

[(1, 28781081), (7, 4111583), (49, 587369), (61, 471821), (427, 67403), (2989, 9629)]