20975031

素因数分解:

$3^5\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1$

素因数の和:111

約数の個数: 96

約数和(自身を含む): 41932800

約数和(自身を除く): 20957769

約数列:

[1, 3, 7, 9, 11, 19, 21, 27, 33, 57, 59, 63, 77, 81, 99, 133, 171, 177, 189, 209, 231, 243, 297, 399, 413, 513, 531, 567, 627, 649, 693, 891, 1121, 1197, 1239, 1463, 1539, 1593, 1701, 1881, 1947, 2079, 2673, 3363, 3591, 3717, 4389, 4543, 4617, 4779, 5643, 5841, 6237, 7847, 10089, 10773, 11151, 12331, 13167, 13629, 14337, 16929, 17523, 18711, 23541, 30267, 32319, 33453, 36993, 39501, 40887, 50787, 52569, 70623, 86317, 90801, 100359, 110979, 118503, 122661, 157707, 211869, 258951, 272403, 332937, 355509, 367983, 635607, 776853, 998811, 1103949, 1906821, 2330559, 2996433, 6991677, 20975031]

約数ペア:

[(1, 20975031), (3, 6991677), (7, 2996433), (9, 2330559), (11, 1906821), (19, 1103949), (21, 998811), (27, 776853), (33, 635607), (57, 367983), (59, 355509), (63, 332937), (77, 272403), (81, 258951), (99, 211869), (133, 157707), (171, 122661), (177, 118503), (189, 110979), (209, 100359), (231, 90801), (243, 86317), (297, 70623), (399, 52569), (413, 50787), (513, 40887), (531, 39501), (567, 36993), (627, 33453), (649, 32319), (693, 30267), (891, 23541), (1121, 18711), (1197, 17523), (1239, 16929), (1463, 14337), (1539, 13629), (1593, 13167), (1701, 12331), (1881, 11151), (1947, 10773), (2079, 10089), (2673, 7847), (3363, 6237), (3591, 5841), (3717, 5643), (4389, 4779), (4543, 4617)]