About the Number

25728640

25728639 ← → 25728641

2進数表記:1100010001001011010000000

漢数字表記:二千五百七十二万八千六百四十

素因数分解:

2 7 × 5 1 × 7 1 × 5743 1

素因数の和:5769
約数の個数: 64
約数和(自身を含む): 70306560
約数和(自身を除く): 44577920

約数列:
[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 280, 320, 448, 560, 640, 896, 1120, 2240, 4480, 5743, 11486, 22972, 28715, 40201, 45944, 57430, 80402, 91888, 114860, 160804, 183776, 201005, 229720, 321608, 367552, 402010, 459440, 643216, 735104, 804020, 918880, 1286432, 1608040, 1837760, 2572864, 3216080, 3675520, 5145728, 6432160, 12864320, 25728640]

約数ペア:
[(1, 25728640), (2, 12864320), (4, 6432160), (5, 5145728), (7, 3675520), (8, 3216080), (10, 2572864), (14, 1837760), (16, 1608040), (20, 1286432), (28, 918880), (32, 804020), (35, 735104), (40, 643216), (56, 459440), (64, 402010), (70, 367552), (80, 321608), (112, 229720), (128, 201005), (140, 183776), (160, 160804), (224, 114860), (280, 91888), (320, 80402), (448, 57430), (560, 45944), (640, 40201), (896, 28715), (1120, 22972), (2240, 11486), (4480, 5743)]

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