20161709540

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{289763}}^1$

素因数の和:289857

約数の個数: 72

約数和(自身を含む): 49946041152

約数和(自身を除く): 29784331612

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 71, 98, 140, 142, 196, 245, 284, 355, 490, 497, 710, 980, 994, 1420, 1988, 2485, 3479, 4970, 6958, 9940, 13916, 17395, 34790, 69580, 289763, 579526, 1159052, 1448815, 2028341, 2897630, 4056682, 5795260, 8113364, 10141705, 14198387, 20283410, 20573173, 28396774, 40566820, 41146346, 56793548, 70991935, 82292692, 102865865, 141983870, 144012211, 205731730, 283967740, 288024422, 411463460, 576048844, 720061055, 1008085477, 1440122110, 2016170954, 2880244220, 4032341908, 5040427385, 10080854770, 20161709540]

約数ペア:

[(1, 20161709540), (2, 10080854770), (4, 5040427385), (5, 4032341908), (7, 2880244220), (10, 2016170954), (14, 1440122110), (20, 1008085477), (28, 720061055), (35, 576048844), (49, 411463460), (70, 288024422), (71, 283967740), (98, 205731730), (140, 144012211), (142, 141983870), (196, 102865865), (245, 82292692), (284, 70991935), (355, 56793548), (490, 41146346), (497, 40566820), (710, 28396774), (980, 20573173), (994, 20283410), (1420, 14198387), (1988, 10141705), (2485, 8113364), (3479, 5795260), (4970, 4056682), (6958, 2897630), (9940, 2028341), (13916, 1448815), (17395, 1159052), (34790, 579526), (69580, 289763)]