About the Number

127912890

127912889 ← → 127912891

2進数表記:111100111111100101110111010

漢数字表記:一億二千七百九十一万二千八百九十

素因数分解:

2 1 × 3 1 × 5 1 × 7 1 × 23 1 × 71 1 × 373 1

素因数の和:484
約数の個数: 128
約数和(自身を含む): 372252672
約数和(自身を除く): 244339782

約数列:
[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 23, 30, 35, 42, 46, 69, 70, 71, 105, 115, 138, 142, 161, 210, 213, 230, 322, 345, 355, 373, 426, 483, 497, 690, 710, 746, 805, 966, 994, 1065, 1119, 1491, 1610, 1633, 1865, 2130, 2238, 2415, 2485, 2611, 2982, 3266, 3730, 4830, 4899, 4970, 5222, 5595, 7455, 7833, 8165, 8579, 9798, 11190, 11431, 13055, 14910, 15666, 16330, 17158, 22862, 24495, 25737, 26110, 26483, 34293, 39165, 42895, 48990, 51474, 52966, 57155, 60053, 68586, 78330, 79449, 85790, 114310, 120106, 128685, 132415, 158898, 171465, 180159, 185381, 257370, 264830, 300265, 342930, 360318, 370762, 397245, 556143, 600530, 609109, 794490, 900795, 926905, 1112286, 1218218, 1801590, 1827327, 1853810, 2780715, 3045545, 3654654, 4263763, 5561430, 6091090, 8527526, 9136635, 12791289, 18273270, 21318815, 25582578, 42637630, 63956445, 127912890]

約数ペア:
[(1, 127912890), (2, 63956445), (3, 42637630), (5, 25582578), (6, 21318815), (7, 18273270), (10, 12791289), (14, 9136635), (15, 8527526), (21, 6091090), (23, 5561430), (30, 4263763), (35, 3654654), (42, 3045545), (46, 2780715), (69, 1853810), (70, 1827327), (71, 1801590), (105, 1218218), (115, 1112286), (138, 926905), (142, 900795), (161, 794490), (210, 609109), (213, 600530), (230, 556143), (322, 397245), (345, 370762), (355, 360318), (373, 342930), (426, 300265), (483, 264830), (497, 257370), (690, 185381), (710, 180159), (746, 171465), (805, 158898), (966, 132415), (994, 128685), (1065, 120106), (1119, 114310), (1491, 85790), (1610, 79449), (1633, 78330), (1865, 68586), (2130, 60053), (2238, 57155), (2415, 52966), (2485, 51474), (2611, 48990), (2982, 42895), (3266, 39165), (3730, 34293), (4830, 26483), (4899, 26110), (4970, 25737), (5222, 24495), (5595, 22862), (7455, 17158), (7833, 16330), (8165, 15666), (8579, 14910), (9798, 13055), (11190, 11431)]

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