About the Number

289380280

289380279 ← → 289380281

2進数表記:10001001111111001011110111000

漢数字表記:二億八千九百三十八万二百八十

素因数分解:

2 3 × 5 1 × 7 2 × 191 1 × 773 1

素因数の和:989
約数の個数: 96
約数和(自身を含む): 762359040
約数和(自身を除く): 472978760

約数列:
[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 191, 196, 245, 280, 382, 392, 490, 764, 773, 955, 980, 1337, 1528, 1546, 1910, 1960, 2674, 3092, 3820, 3865, 5348, 5411, 6184, 6685, 7640, 7730, 9359, 10696, 10822, 13370, 15460, 18718, 21644, 26740, 27055, 30920, 37436, 37877, 43288, 46795, 53480, 54110, 74872, 75754, 93590, 108220, 147643, 151508, 187180, 189385, 216440, 295286, 303016, 374360, 378770, 590572, 738215, 757540, 1033501, 1181144, 1476430, 1515080, 2067002, 2952860, 4134004, 5167505, 5905720, 7234507, 8268008, 10335010, 14469014, 20670020, 28938028, 36172535, 41340040, 57876056, 72345070, 144690140, 289380280]

約数ペア:
[(1, 289380280), (2, 144690140), (4, 72345070), (5, 57876056), (7, 41340040), (8, 36172535), (10, 28938028), (14, 20670020), (20, 14469014), (28, 10335010), (35, 8268008), (40, 7234507), (49, 5905720), (56, 5167505), (70, 4134004), (98, 2952860), (140, 2067002), (191, 1515080), (196, 1476430), (245, 1181144), (280, 1033501), (382, 757540), (392, 738215), (490, 590572), (764, 378770), (773, 374360), (955, 303016), (980, 295286), (1337, 216440), (1528, 189385), (1546, 187180), (1910, 151508), (1960, 147643), (2674, 108220), (3092, 93590), (3820, 75754), (3865, 74872), (5348, 54110), (5411, 53480), (6184, 46795), (6685, 43288), (7640, 37877), (7730, 37436), (9359, 30920), (10696, 27055), (10822, 26740), (13370, 21644), (15460, 18718)]

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