20291055

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1\times {\mathrm{193}}^1$

素因数の和:407

約数の個数: 32

約数和(自身を含む): 33597696

約数和(自身を除く): 13306641

約数列:

[1, 3, 5, 15, 43, 129, 163, 193, 215, 489, 579, 645, 815, 965, 2445, 2895, 7009, 8299, 21027, 24897, 31459, 35045, 41495, 94377, 105135, 124485, 157295, 471885, 1352737, 4058211, 6763685, 20291055]

約数ペア:

[(1, 20291055), (3, 6763685), (5, 4058211), (15, 1352737), (43, 471885), (129, 157295), (163, 124485), (193, 105135), (215, 94377), (489, 41495), (579, 35045), (645, 31459), (815, 24897), (965, 21027), (2445, 8299), (2895, 7009)]