About the Number

13255281

13255280 ← → 13255282

2進数表記:110010100100001001110001

漢数字表記:千三百二十五万五千二百八十一

素因数分解:

3 2 × 13 1 × 277 1 × 409 1

素因数の和:705
約数の個数: 24
約数和(自身を含む): 20744360
約数和(自身を除く): 7489079

約数列:
[1, 3, 9, 13, 39, 117, 277, 409, 831, 1227, 2493, 3601, 3681, 5317, 10803, 15951, 32409, 47853, 113293, 339879, 1019637, 1472809, 4418427, 13255281]

約数ペア:
[(1, 13255281), (3, 4418427), (9, 1472809), (13, 1019637), (39, 339879), (117, 113293), (277, 47853), (409, 32409), (831, 15951), (1227, 10803), (2493, 5317), (3601, 3681)]

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