About the Number

21317956

21317955 ← → 21317957

2進数表記:1010001010100100101000100

漢数字表記:二千百三十一万七千九百五十六

素因数分解:

2 2 × 11 1 × 31 1 × 15629 1

素因数の和:15675
約数の個数: 24
約数和(自身を含む): 42013440
約数和(自身を除く): 20695484

約数列:
[1, 2, 4, 11, 22, 31, 44, 62, 124, 341, 682, 1364, 15629, 31258, 62516, 171919, 343838, 484499, 687676, 968998, 1937996, 5329489, 10658978, 21317956]

約数ペア:
[(1, 21317956), (2, 10658978), (4, 5329489), (11, 1937996), (22, 968998), (31, 687676), (44, 484499), (62, 343838), (124, 171919), (341, 62516), (682, 31258), (1364, 15629)]

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