21600891

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:161

約数の個数: 64

約数和(自身を含む): 37632000

約数和(自身を除く): 16031109

約数列:

[1, 3, 9, 13, 19, 27, 39, 41, 57, 79, 117, 123, 171, 237, 247, 351, 369, 513, 533, 711, 741, 779, 1027, 1107, 1501, 1599, 2133, 2223, 2337, 3081, 3239, 4503, 4797, 6669, 7011, 9243, 9717, 10127, 13509, 14391, 19513, 21033, 27729, 29151, 30381, 40527, 42107, 58539, 61541, 87453, 91143, 126321, 175617, 184623, 273429, 378963, 526851, 553869, 800033, 1136889, 1661607, 2400099, 7200297, 21600891]

約数ペア:

[(1, 21600891), (3, 7200297), (9, 2400099), (13, 1661607), (19, 1136889), (27, 800033), (39, 553869), (41, 526851), (57, 378963), (79, 273429), (117, 184623), (123, 175617), (171, 126321), (237, 91143), (247, 87453), (351, 61541), (369, 58539), (513, 42107), (533, 40527), (711, 30381), (741, 29151), (779, 27729), (1027, 21033), (1107, 19513), (1501, 14391), (1599, 13509), (2133, 10127), (2223, 9717), (2337, 9243), (3081, 7011), (3239, 6669), (4503, 4797)]