20217559621

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{431}}^1\times {\mathrm{8387}}^1$

素因数の和:8889

約数の個数: 32

約数和(自身を含む): 25046433792

約数和(自身を除く): 4828874171

約数列:

[1, 7, 17, 47, 119, 329, 431, 799, 3017, 5593, 7327, 8387, 20257, 51289, 58709, 141799, 142579, 344369, 394189, 998053, 2410583, 2759323, 3614797, 6701213, 25303579, 46908491, 61451549, 169895459, 430160843, 1189268213, 2888222803, 20217559621]

約数ペア:

[(1, 20217559621), (7, 2888222803), (17, 1189268213), (47, 430160843), (119, 169895459), (329, 61451549), (431, 46908491), (799, 25303579), (3017, 6701213), (5593, 3614797), (7327, 2759323), (8387, 2410583), (20257, 998053), (51289, 394189), (58709, 344369), (141799, 142579)]