208759915

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{197}}^1$

素因数の和:376

約数の個数: 64

約数和(自身を含む): 330511104

約数和(自身を除く): 121751189

約数列:

[1, 5, 7, 13, 17, 35, 65, 85, 91, 119, 137, 197, 221, 455, 595, 685, 959, 985, 1105, 1379, 1547, 1781, 2329, 2561, 3349, 4795, 6895, 7735, 8905, 11645, 12467, 12805, 16303, 16745, 17927, 23443, 26989, 30277, 43537, 62335, 81515, 89635, 117215, 134945, 151385, 188923, 211939, 217685, 304759, 350857, 458813, 944615, 1059695, 1523795, 1754285, 2294065, 2455999, 3211691, 5964569, 12279995, 16058455, 29822845, 41751983, 208759915]

約数ペア:

[(1, 208759915), (5, 41751983), (7, 29822845), (13, 16058455), (17, 12279995), (35, 5964569), (65, 3211691), (85, 2455999), (91, 2294065), (119, 1754285), (137, 1523795), (197, 1059695), (221, 944615), (455, 458813), (595, 350857), (685, 304759), (959, 217685), (985, 211939), (1105, 188923), (1379, 151385), (1547, 134945), (1781, 117215), (2329, 89635), (2561, 81515), (3349, 62335), (4795, 43537), (6895, 30277), (7735, 26989), (8905, 23443), (11645, 17927), (12467, 16745), (12805, 16303)]