About the Number

2166780

2166779 ← → 2166781

2進数表記:1000010000111111111100

漢数字表記:二百十六万六千七百八十

素因数分解:

2 2 × 3 1 × 5 1 × 7 2 × 11 1 × 67 1

素因数の和:104
約数の個数: 144
約数和(自身を含む): 7814016
約数和(自身を除く): 5647236

約数列:
[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 28, 30, 33, 35, 42, 44, 49, 55, 60, 66, 67, 70, 77, 84, 98, 105, 110, 132, 134, 140, 147, 154, 165, 196, 201, 210, 220, 231, 245, 268, 294, 308, 330, 335, 385, 402, 420, 462, 469, 490, 539, 588, 660, 670, 735, 737, 770, 804, 924, 938, 980, 1005, 1078, 1155, 1340, 1407, 1470, 1474, 1540, 1617, 1876, 2010, 2156, 2211, 2310, 2345, 2695, 2814, 2940, 2948, 3234, 3283, 3685, 4020, 4422, 4620, 4690, 5159, 5390, 5628, 6468, 6566, 7035, 7370, 8085, 8844, 9380, 9849, 10318, 10780, 11055, 13132, 14070, 14740, 15477, 16170, 16415, 19698, 20636, 22110, 25795, 28140, 30954, 32340, 32830, 36113, 39396, 44220, 49245, 51590, 61908, 65660, 72226, 77385, 98490, 103180, 108339, 144452, 154770, 180565, 196980, 216678, 309540, 361130, 433356, 541695, 722260, 1083390, 2166780]

約数ペア:
[(1, 2166780), (2, 1083390), (3, 722260), (4, 541695), (5, 433356), (6, 361130), (7, 309540), (10, 216678), (11, 196980), (12, 180565), (14, 154770), (15, 144452), (20, 108339), (21, 103180), (22, 98490), (28, 77385), (30, 72226), (33, 65660), (35, 61908), (42, 51590), (44, 49245), (49, 44220), (55, 39396), (60, 36113), (66, 32830), (67, 32340), (70, 30954), (77, 28140), (84, 25795), (98, 22110), (105, 20636), (110, 19698), (132, 16415), (134, 16170), (140, 15477), (147, 14740), (154, 14070), (165, 13132), (196, 11055), (201, 10780), (210, 10318), (220, 9849), (231, 9380), (245, 8844), (268, 8085), (294, 7370), (308, 7035), (330, 6566), (335, 6468), (385, 5628), (402, 5390), (420, 5159), (462, 4690), (469, 4620), (490, 4422), (539, 4020), (588, 3685), (660, 3283), (670, 3234), (735, 2948), (737, 2940), (770, 2814), (804, 2695), (924, 2345), (938, 2310), (980, 2211), (1005, 2156), (1078, 2010), (1155, 1876), (1340, 1617), (1407, 1540), (1470, 1474)]

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