20806561685

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^2\times {\mathrm{33403}}^1$

素因数の和:33502

約数の個数: 48

約数和(自身を含む): 31583615616

約数和(自身を除く): 10777053931

約数列:

[1, 5, 7, 13, 35, 37, 65, 91, 185, 259, 455, 481, 1295, 1369, 2405, 3367, 6845, 9583, 16835, 17797, 33403, 47915, 88985, 124579, 167015, 233821, 434239, 622895, 1169105, 1235911, 2171195, 3039673, 6179555, 8651377, 15198365, 16066843, 43256885, 45728707, 80334215, 112467901, 228643535, 320100949, 562339505, 594473191, 1600504745, 2972365955, 4161312337, 20806561685]

約数ペア:

[(1, 20806561685), (5, 4161312337), (7, 2972365955), (13, 1600504745), (35, 594473191), (37, 562339505), (65, 320100949), (91, 228643535), (185, 112467901), (259, 80334215), (455, 45728707), (481, 43256885), (1295, 16066843), (1369, 15198365), (2405, 8651377), (3367, 6179555), (6845, 3039673), (9583, 2171195), (16835, 1235911), (17797, 1169105), (33403, 622895), (47915, 434239), (88985, 233821), (124579, 167015)]