About the Number

21057993

21057992 ← → 21057994

2進数表記:1010000010101000111001001

漢数字表記:二千百五万七千九百九十三

素因数分解:

3 2 × 11 2 × 61 1 × 317 1

素因数の和:406
約数の個数: 36
約数和(自身を含む): 34088964
約数和(自身を除く): 13030971

約数列:
[1, 3, 9, 11, 33, 61, 99, 121, 183, 317, 363, 549, 671, 951, 1089, 2013, 2853, 3487, 6039, 7381, 10461, 19337, 22143, 31383, 38357, 58011, 66429, 115071, 174033, 212707, 345213, 638121, 1914363, 2339777, 7019331, 21057993]

約数ペア:
[(1, 21057993), (3, 7019331), (9, 2339777), (11, 1914363), (33, 638121), (61, 345213), (99, 212707), (121, 174033), (183, 115071), (317, 66429), (363, 58011), (549, 38357), (671, 31383), (951, 22143), (1089, 19337), (2013, 10461), (2853, 7381), (3487, 6039)]

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