18489780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{739}}^1$

素因数の和:893

約数の個数: 72

約数和(自身を含む): 56565600

約数和(自身を除く): 38075820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 139, 180, 278, 417, 556, 695, 739, 834, 1251, 1390, 1478, 1668, 2085, 2217, 2502, 2780, 2956, 3695, 4170, 4434, 5004, 6255, 6651, 7390, 8340, 8868, 11085, 12510, 13302, 14780, 22170, 25020, 26604, 33255, 44340, 66510, 102721, 133020, 205442, 308163, 410884, 513605, 616326, 924489, 1027210, 1232652, 1540815, 1848978, 2054420, 3081630, 3697956, 4622445, 6163260, 9244890, 18489780]

約数ペア:

[(1, 18489780), (2, 9244890), (3, 6163260), (4, 4622445), (5, 3697956), (6, 3081630), (9, 2054420), (10, 1848978), (12, 1540815), (15, 1232652), (18, 1027210), (20, 924489), (30, 616326), (36, 513605), (45, 410884), (60, 308163), (90, 205442), (139, 133020), (180, 102721), (278, 66510), (417, 44340), (556, 33255), (695, 26604), (739, 25020), (834, 22170), (1251, 14780), (1390, 13302), (1478, 12510), (1668, 11085), (2085, 8868), (2217, 8340), (2502, 7390), (2780, 6651), (2956, 6255), (3695, 5004), (4170, 4434)]