About the Number

21009470

21009469 ← → 21009471

2進数表記:1010000001001010000111110

漢数字表記:二千百万九千四百七十

素因数分解:

2 1 × 5 1 × 47 1 × 44701 1

素因数の和:44755
約数の個数: 16
約数和(自身を含む): 38622528
約数和(自身を除く): 17613058

約数列:
[1, 2, 5, 10, 47, 94, 235, 470, 44701, 89402, 223505, 447010, 2100947, 4201894, 10504735, 21009470]

約数ペア:
[(1, 21009470), (2, 10504735), (5, 4201894), (10, 2100947), (47, 447010), (94, 223505), (235, 89402), (470, 44701)]

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