28640997

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1117}}^1$

素因数の和:1178

約数の個数: 48

約数和(自身を含む): 53020032

約数和(自身を除く): 24379035

約数列:

[1, 3, 7, 9, 11, 21, 33, 37, 63, 77, 99, 111, 231, 259, 333, 407, 693, 777, 1117, 1221, 2331, 2849, 3351, 3663, 7819, 8547, 10053, 12287, 23457, 25641, 36861, 41329, 70371, 86009, 110583, 123987, 258027, 289303, 371961, 454619, 774081, 867909, 1363857, 2603727, 3182333, 4091571, 9546999, 28640997]

約数ペア:

[(1, 28640997), (3, 9546999), (7, 4091571), (9, 3182333), (11, 2603727), (21, 1363857), (33, 867909), (37, 774081), (63, 454619), (77, 371961), (99, 289303), (111, 258027), (231, 123987), (259, 110583), (333, 86009), (407, 70371), (693, 41329), (777, 36861), (1117, 25641), (1221, 23457), (2331, 12287), (2849, 10053), (3351, 8547), (3663, 7819)]