20777757

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1$

素因数の和:99

約数の個数: 96

約数和(自身を含む): 40755456

約数和(自身を除く): 19977699

約数列:

[1, 3, 7, 11, 13, 17, 21, 33, 37, 39, 51, 77, 91, 111, 119, 121, 143, 187, 221, 231, 259, 273, 357, 363, 407, 429, 481, 561, 629, 663, 777, 847, 1001, 1221, 1309, 1443, 1547, 1573, 1887, 2057, 2431, 2541, 2849, 3003, 3367, 3927, 4403, 4477, 4641, 4719, 5291, 6171, 6919, 7293, 8177, 8547, 10101, 11011, 13209, 13431, 14399, 15873, 17017, 20757, 24531, 26741, 31339, 33033, 37037, 43197, 48433, 51051, 57239, 58201, 76109, 80223, 89947, 94017, 111111, 145299, 171717, 174603, 187187, 228327, 269841, 407407, 532763, 561561, 629629, 989417, 1222221, 1598289, 1888887, 2968251, 6925919, 20777757]

約数ペア:

[(1, 20777757), (3, 6925919), (7, 2968251), (11, 1888887), (13, 1598289), (17, 1222221), (21, 989417), (33, 629629), (37, 561561), (39, 532763), (51, 407407), (77, 269841), (91, 228327), (111, 187187), (119, 174603), (121, 171717), (143, 145299), (187, 111111), (221, 94017), (231, 89947), (259, 80223), (273, 76109), (357, 58201), (363, 57239), (407, 51051), (429, 48433), (481, 43197), (561, 37037), (629, 33033), (663, 31339), (777, 26741), (847, 24531), (1001, 20757), (1221, 17017), (1309, 15873), (1443, 14399), (1547, 13431), (1573, 13209), (1887, 11011), (2057, 10101), (2431, 8547), (2541, 8177), (2849, 7293), (3003, 6919), (3367, 6171), (3927, 5291), (4403, 4719), (4477, 4641)]