About the Number

1289722128

1289722127 ← → 1289722129

2進数表記:1001100110111111001100100010000

漢数字表記:十二億八千九百七十二万二千百二十八

素因数分解:

2 4 × 3 1 × 19 1 × 67 1 × 21107 1

素因数の和:21204
約数の個数: 80
約数和(自身を含む): 3559653120
約数和(自身を除く): 2269930992

約数列:
[1, 2, 3, 4, 6, 8, 12, 16, 19, 24, 38, 48, 57, 67, 76, 114, 134, 152, 201, 228, 268, 304, 402, 456, 536, 804, 912, 1072, 1273, 1608, 2546, 3216, 3819, 5092, 7638, 10184, 15276, 20368, 21107, 30552, 42214, 61104, 63321, 84428, 126642, 168856, 253284, 337712, 401033, 506568, 802066, 1013136, 1203099, 1414169, 1604132, 2406198, 2828338, 3208264, 4242507, 4812396, 5656676, 6416528, 8485014, 9624792, 11313352, 16970028, 19249584, 22626704, 26869211, 33940056, 53738422, 67880112, 80607633, 107476844, 161215266, 214953688, 322430532, 429907376, 644861064, 1289722128]

約数ペア:
[(1, 1289722128), (2, 644861064), (3, 429907376), (4, 322430532), (6, 214953688), (8, 161215266), (12, 107476844), (16, 80607633), (19, 67880112), (24, 53738422), (38, 33940056), (48, 26869211), (57, 22626704), (67, 19249584), (76, 16970028), (114, 11313352), (134, 9624792), (152, 8485014), (201, 6416528), (228, 5656676), (268, 4812396), (304, 4242507), (402, 3208264), (456, 2828338), (536, 2406198), (804, 1604132), (912, 1414169), (1072, 1203099), (1273, 1013136), (1608, 802066), (2546, 506568), (3216, 401033), (3819, 337712), (5092, 253284), (7638, 168856), (10184, 126642), (15276, 84428), (20368, 63321), (21107, 61104), (30552, 42214)]

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