20404629

素因数分解:

$3^4\times 7^2\times {\mathrm{53}}^1\times {\mathrm{97}}^1$

素因数の和:176

約数の個数: 60

約数和(自身を含む): 36498924

約数和(自身を除く): 16094295

約数列:

[1, 3, 7, 9, 21, 27, 49, 53, 63, 81, 97, 147, 159, 189, 291, 371, 441, 477, 567, 679, 873, 1113, 1323, 1431, 2037, 2597, 2619, 3339, 3969, 4293, 4753, 5141, 6111, 7791, 7857, 10017, 14259, 15423, 18333, 23373, 30051, 35987, 42777, 46269, 54999, 70119, 107961, 128331, 138807, 210357, 251909, 323883, 384993, 416421, 755727, 971649, 2267181, 2914947, 6801543, 20404629]

約数ペア:

[(1, 20404629), (3, 6801543), (7, 2914947), (9, 2267181), (21, 971649), (27, 755727), (49, 416421), (53, 384993), (63, 323883), (81, 251909), (97, 210357), (147, 138807), (159, 128331), (189, 107961), (291, 70119), (371, 54999), (441, 46269), (477, 42777), (567, 35987), (679, 30051), (873, 23373), (1113, 18333), (1323, 15423), (1431, 14259), (2037, 10017), (2597, 7857), (2619, 7791), (3339, 6111), (3969, 5141), (4293, 4753)]