20455840223

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{173}}^1\times {\mathrm{179}}^1$

素因数の和:457

約数の個数: 96

約数和(自身を含む): 27892589760

約数和(自身を除く): 7436749537

約数列:

[1, 7, 13, 17, 49, 61, 91, 119, 173, 179, 221, 427, 637, 793, 833, 1037, 1211, 1253, 1547, 2249, 2327, 2941, 2989, 3043, 5551, 7259, 8477, 8771, 10553, 10829, 10919, 13481, 15743, 16289, 20587, 21301, 30967, 38233, 38857, 39559, 50813, 73871, 76433, 94367, 110201, 114023, 137189, 141947, 144109, 149107, 179401, 185623, 216769, 267631, 276913, 402571, 517097, 526439, 535031, 660569, 960323, 993629, 1255807, 1299361, 1517383, 1873417, 1888987, 1938391, 2332213, 2413099, 2817997, 3685073, 6722261, 6843707, 6955403, 8790649, 9095527, 13222909, 16325491, 16891693, 19725979, 24556831, 25795511, 32112779, 47905949, 92560363, 114278437, 118241851, 171897817, 224789453, 335341643, 417466127, 1203284719, 1573526171, 2922262889, 20455840223]

約数ペア:

[(1, 20455840223), (7, 2922262889), (13, 1573526171), (17, 1203284719), (49, 417466127), (61, 335341643), (91, 224789453), (119, 171897817), (173, 118241851), (179, 114278437), (221, 92560363), (427, 47905949), (637, 32112779), (793, 25795511), (833, 24556831), (1037, 19725979), (1211, 16891693), (1253, 16325491), (1547, 13222909), (2249, 9095527), (2327, 8790649), (2941, 6955403), (2989, 6843707), (3043, 6722261), (5551, 3685073), (7259, 2817997), (8477, 2413099), (8771, 2332213), (10553, 1938391), (10829, 1888987), (10919, 1873417), (13481, 1517383), (15743, 1299361), (16289, 1255807), (20587, 993629), (21301, 960323), (30967, 660569), (38233, 535031), (38857, 526439), (39559, 517097), (50813, 402571), (73871, 276913), (76433, 267631), (94367, 216769), (110201, 185623), (114023, 179401), (137189, 149107), (141947, 144109)]