About the Number

20972481

20972480 ← → 20972482

2進数表記:1010000000000001111000001

漢数字表記:二千九十七万二千四百八十一

素因数分解:

3 1 × 23 1 × 29 1 × 47 1 × 223 1

素因数の和:325
約数の個数: 32
約数和(自身を含む): 30965760
約数和(自身を除く): 9993279

約数列:
[1, 3, 23, 29, 47, 69, 87, 141, 223, 667, 669, 1081, 1363, 2001, 3243, 4089, 5129, 6467, 10481, 15387, 19401, 31349, 31443, 94047, 148741, 241063, 303949, 446223, 723189, 911847, 6990827, 20972481]

約数ペア:
[(1, 20972481), (3, 6990827), (23, 911847), (29, 723189), (47, 446223), (69, 303949), (87, 241063), (141, 148741), (223, 94047), (667, 31443), (669, 31349), (1081, 19401), (1363, 15387), (2001, 10481), (3243, 6467), (4089, 5129)]

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