About the Number

90028991

90028990 ← → 90028992

2進数表記:101010111011011101110111111

漢数字表記:九千二万八千九百九十一

素因数分解:

13 1 × 17 2 × 31 1 × 773 1

素因数の和:851
約数の個数: 24
約数和(自身を含む): 106452864
約数和(自身を除く): 16423873

約数列:
[1, 13, 17, 31, 221, 289, 403, 527, 773, 3757, 6851, 8959, 10049, 13141, 23963, 116467, 170833, 223397, 311519, 407371, 2904161, 5295823, 6925307, 90028991]

約数ペア:
[(1, 90028991), (13, 6925307), (17, 5295823), (31, 2904161), (221, 407371), (289, 311519), (403, 223397), (527, 170833), (773, 116467), (3757, 23963), (6851, 13141), (8959, 10049)]

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