About the Number

205990288

205990287 ← → 205990289

2進数表記:1100010001110010100110010000

漢数字表記:二億五百九十九万二百八十八

素因数分解:

2 4 × 7 1 × 31 1 × 79 1 × 751 1

素因数の和:876
約数の個数: 80
約数和(自身を含む): 477429760
約数和(自身を除く): 271439472

約数列:
[1, 2, 4, 7, 8, 14, 16, 28, 31, 56, 62, 79, 112, 124, 158, 217, 248, 316, 434, 496, 553, 632, 751, 868, 1106, 1264, 1502, 1736, 2212, 2449, 3004, 3472, 4424, 4898, 5257, 6008, 8848, 9796, 10514, 12016, 17143, 19592, 21028, 23281, 34286, 39184, 42056, 46562, 59329, 68572, 84112, 93124, 118658, 137144, 162967, 186248, 237316, 274288, 325934, 372496, 415303, 474632, 651868, 830606, 949264, 1303736, 1661212, 1839199, 2607472, 3322424, 3678398, 6644848, 7356796, 12874393, 14713592, 25748786, 29427184, 51497572, 102995144, 205990288]

約数ペア:
[(1, 205990288), (2, 102995144), (4, 51497572), (7, 29427184), (8, 25748786), (14, 14713592), (16, 12874393), (28, 7356796), (31, 6644848), (56, 3678398), (62, 3322424), (79, 2607472), (112, 1839199), (124, 1661212), (158, 1303736), (217, 949264), (248, 830606), (316, 651868), (434, 474632), (496, 415303), (553, 372496), (632, 325934), (751, 274288), (868, 237316), (1106, 186248), (1264, 162967), (1502, 137144), (1736, 118658), (2212, 93124), (2449, 84112), (3004, 68572), (3472, 59329), (4424, 46562), (4898, 42056), (5257, 39184), (6008, 34286), (8848, 23281), (9796, 21028), (10514, 19592), (12016, 17143)]

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