About the Number

20989965

20989964 ← → 20989966

2進数表記:1010000000100100000001101

漢数字表記:二千九十八万九千九百六十五

素因数分解:

3 1 × 5 1 × 19 1 × 47 1 × 1567 1

素因数の和:1641
約数の個数: 32
約数和(自身を含む): 36126720
約数和(自身を除く): 15136755

約数列:
[1, 3, 5, 15, 19, 47, 57, 95, 141, 235, 285, 705, 893, 1567, 2679, 4465, 4701, 7835, 13395, 23505, 29773, 73649, 89319, 148865, 220947, 368245, 446595, 1104735, 1399331, 4197993, 6996655, 20989965]

約数ペア:
[(1, 20989965), (3, 6996655), (5, 4197993), (15, 1399331), (19, 1104735), (47, 446595), (57, 368245), (95, 220947), (141, 148865), (235, 89319), (285, 73649), (705, 29773), (893, 23505), (1567, 13395), (2679, 7835), (4465, 4701)]

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