21085105088

素因数分解:

$2^6\times {\mathrm{73}}^2\times {\mathrm{211}}^1\times {\mathrm{293}}^1$

素因数の和:662

約数の個数: 84

約数和(自身を含む): 42768289368

約数和(自身を除く): 21683184280

約数列:

[1, 2, 4, 8, 16, 32, 64, 73, 146, 211, 292, 293, 422, 584, 586, 844, 1168, 1172, 1688, 2336, 2344, 3376, 4672, 4688, 5329, 6752, 9376, 10658, 13504, 15403, 18752, 21316, 21389, 30806, 42632, 42778, 61612, 61823, 85264, 85556, 123224, 123646, 170528, 171112, 246448, 247292, 341056, 342224, 492896, 494584, 684448, 985792, 989168, 1124419, 1368896, 1561397, 1978336, 2248838, 3122794, 3956672, 4497676, 4513079, 6245588, 8995352, 9026158, 12491176, 17990704, 18052316, 24982352, 35981408, 36104632, 49964704, 71962816, 72209264, 99929408, 144418528, 288837056, 329454767, 658909534, 1317819068, 2635638136, 5271276272, 10542552544, 21085105088]

約数ペア:

[(1, 21085105088), (2, 10542552544), (4, 5271276272), (8, 2635638136), (16, 1317819068), (32, 658909534), (64, 329454767), (73, 288837056), (146, 144418528), (211, 99929408), (292, 72209264), (293, 71962816), (422, 49964704), (584, 36104632), (586, 35981408), (844, 24982352), (1168, 18052316), (1172, 17990704), (1688, 12491176), (2336, 9026158), (2344, 8995352), (3376, 6245588), (4672, 4513079), (4688, 4497676), (5329, 3956672), (6752, 3122794), (9376, 2248838), (10658, 1978336), (13504, 1561397), (15403, 1368896), (18752, 1124419), (21316, 989168), (21389, 985792), (30806, 684448), (42632, 494584), (42778, 492896), (61612, 342224), (61823, 341056), (85264, 247292), (85556, 246448), (123224, 171112), (123646, 170528)]