About the Number

21397145

21397144 ← → 21397146

2進数表記:1010001100111111010011001

漢数字表記:二千百三十九万七千百四十五

素因数分解:

5 1 × 7 1 × 11 1 × 149 1 × 373 1

素因数の和:545
約数の個数: 32
約数和(自身を含む): 32313600
約数和(自身を除く): 10916455

約数列:
[1, 5, 7, 11, 35, 55, 77, 149, 373, 385, 745, 1043, 1639, 1865, 2611, 4103, 5215, 8195, 11473, 13055, 20515, 28721, 55577, 57365, 143605, 277885, 389039, 611347, 1945195, 3056735, 4279429, 21397145]

約数ペア:
[(1, 21397145), (5, 4279429), (7, 3056735), (11, 1945195), (35, 611347), (55, 389039), (77, 277885), (149, 143605), (373, 57365), (385, 55577), (745, 28721), (1043, 20515), (1639, 13055), (1865, 11473), (2611, 8195), (4103, 5215)]

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