About the Number

138781680

138781679 ← → 138781681

2進数表記:1000010001011010001111110000

漢数字表記:一億三千八百七十八万千六百八十

素因数分解:

2 4 × 3 1 × 5 1 × 331 1 × 1747 1

素因数の和:2094
約数の個数: 80
約数和(自身を含む): 431769984
約数和(自身を除く): 292988304

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 331, 662, 993, 1324, 1655, 1747, 1986, 2648, 3310, 3494, 3972, 4965, 5241, 5296, 6620, 6988, 7944, 8735, 9930, 10482, 13240, 13976, 15888, 17470, 19860, 20964, 26205, 26480, 27952, 34940, 39720, 41928, 52410, 69880, 79440, 83856, 104820, 139760, 209640, 419280, 578257, 1156514, 1734771, 2313028, 2891285, 3469542, 4626056, 5782570, 6939084, 8673855, 9252112, 11565140, 13878168, 17347710, 23130280, 27756336, 34695420, 46260560, 69390840, 138781680]

約数ペア:
[(1, 138781680), (2, 69390840), (3, 46260560), (4, 34695420), (5, 27756336), (6, 23130280), (8, 17347710), (10, 13878168), (12, 11565140), (15, 9252112), (16, 8673855), (20, 6939084), (24, 5782570), (30, 4626056), (40, 3469542), (48, 2891285), (60, 2313028), (80, 1734771), (120, 1156514), (240, 578257), (331, 419280), (662, 209640), (993, 139760), (1324, 104820), (1655, 83856), (1747, 79440), (1986, 69880), (2648, 52410), (3310, 41928), (3494, 39720), (3972, 34940), (4965, 27952), (5241, 26480), (5296, 26205), (6620, 20964), (6988, 19860), (7944, 17470), (8735, 15888), (9930, 13976), (10482, 13240)]

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