18778880757

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{521}}^1\times {\mathrm{4259}}^1$

素因数の和:4834

約数の個数: 64

約数和(自身を含む): 31879249920

約数和(自身を除く): 13100369163

約数列:

[1, 3, 7, 13, 21, 31, 39, 91, 93, 217, 273, 403, 521, 651, 1209, 1563, 2821, 3647, 4259, 6773, 8463, 10941, 12777, 16151, 20319, 29813, 47411, 48453, 55367, 89439, 113057, 132029, 142233, 166101, 209963, 339171, 387569, 396087, 629889, 924203, 1162707, 1469741, 1716377, 2218939, 2772609, 4409223, 5149131, 6656817, 12014639, 15532573, 28846207, 36043917, 46597719, 68787109, 86538621, 201923449, 206361327, 481509763, 605770347, 894232417, 1444529289, 2682697251, 6259626919, 18778880757]

約数ペア:

[(1, 18778880757), (3, 6259626919), (7, 2682697251), (13, 1444529289), (21, 894232417), (31, 605770347), (39, 481509763), (91, 206361327), (93, 201923449), (217, 86538621), (273, 68787109), (403, 46597719), (521, 36043917), (651, 28846207), (1209, 15532573), (1563, 12014639), (2821, 6656817), (3647, 5149131), (4259, 4409223), (6773, 2772609), (8463, 2218939), (10941, 1716377), (12777, 1469741), (16151, 1162707), (20319, 924203), (29813, 629889), (47411, 396087), (48453, 387569), (55367, 339171), (89439, 209963), (113057, 166101), (132029, 142233)]