About the Number

20721320

20721319 ← → 20721321

2進数表記:1001111000010111010101000

漢数字表記:二千七十二万千三百二十

素因数分解:

2 3 × 5 1 × 127 1 × 4079 1

素因数の和:4217
約数の個数: 32
約数和(自身を含む): 47001600
約数和(自身を除く): 26280280

約数列:
[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 508, 635, 1016, 1270, 2540, 4079, 5080, 8158, 16316, 20395, 32632, 40790, 81580, 163160, 518033, 1036066, 2072132, 2590165, 4144264, 5180330, 10360660, 20721320]

約数ペア:
[(1, 20721320), (2, 10360660), (4, 5180330), (5, 4144264), (8, 2590165), (10, 2072132), (20, 1036066), (40, 518033), (127, 163160), (254, 81580), (508, 40790), (635, 32632), (1016, 20395), (1270, 16316), (2540, 8158), (4079, 5080)]

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