20759816

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{503}}^1$

素因数の和:594

約数の個数: 64

約数和(自身を含む): 49351680

約数和(自身を除く): 28591864

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 67, 77, 88, 134, 154, 268, 308, 469, 503, 536, 616, 737, 938, 1006, 1474, 1876, 2012, 2948, 3521, 3752, 4024, 5159, 5533, 5896, 7042, 10318, 11066, 14084, 20636, 22132, 28168, 33701, 38731, 41272, 44264, 67402, 77462, 134804, 154924, 235907, 269608, 309848, 370711, 471814, 741422, 943628, 1482844, 1887256, 2594977, 2965688, 5189954, 10379908, 20759816]

約数ペア:

[(1, 20759816), (2, 10379908), (4, 5189954), (7, 2965688), (8, 2594977), (11, 1887256), (14, 1482844), (22, 943628), (28, 741422), (44, 471814), (56, 370711), (67, 309848), (77, 269608), (88, 235907), (134, 154924), (154, 134804), (268, 77462), (308, 67402), (469, 44264), (503, 41272), (536, 38731), (616, 33701), (737, 28168), (938, 22132), (1006, 20636), (1474, 14084), (1876, 11066), (2012, 10318), (2948, 7042), (3521, 5896), (3752, 5533), (4024, 5159)]