About the Number

30728640

30728639 ← → 30728641

2進数表記:1110101001110000111000000

漢数字表記:三千七十二万八千六百四十

素因数分解:

2 6 × 3 1 × 5 1 × 32009 1

素因数の和:32029
約数の個数: 56
約数和(自身を含む): 97566480
約数和(自身を除く): 66837840

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 160, 192, 240, 320, 480, 960, 32009, 64018, 96027, 128036, 160045, 192054, 256072, 320090, 384108, 480135, 512144, 640180, 768216, 960270, 1024288, 1280360, 1536432, 1920540, 2048576, 2560720, 3072864, 3841080, 5121440, 6145728, 7682160, 10242880, 15364320, 30728640]

約数ペア:
[(1, 30728640), (2, 15364320), (3, 10242880), (4, 7682160), (5, 6145728), (6, 5121440), (8, 3841080), (10, 3072864), (12, 2560720), (15, 2048576), (16, 1920540), (20, 1536432), (24, 1280360), (30, 1024288), (32, 960270), (40, 768216), (48, 640180), (60, 512144), (64, 480135), (80, 384108), (96, 320090), (120, 256072), (160, 192054), (192, 160045), (240, 128036), (320, 96027), (480, 64018), (960, 32009)]

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