About the Number

138887490

138887489 ← → 138887491

2進数表記:1000010001110100000101000010

漢数字表記:一億三千八百八十八万七千四百九十

素因数分解:

2 1 × 3 1 × 5 1 × 7 1 × 313 1 × 2113 1

素因数の和:2443
約数の個数: 64
約数和(自身を含む): 382346496
約数和(自身を除く): 243459006

約数列:
[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 313, 626, 939, 1565, 1878, 2113, 2191, 3130, 4226, 4382, 4695, 6339, 6573, 9390, 10565, 10955, 12678, 13146, 14791, 21130, 21910, 29582, 31695, 32865, 44373, 63390, 65730, 73955, 88746, 147910, 221865, 443730, 661369, 1322738, 1984107, 3306845, 3968214, 4629583, 6613690, 9259166, 9920535, 13888749, 19841070, 23147915, 27777498, 46295830, 69443745, 138887490]

約数ペア:
[(1, 138887490), (2, 69443745), (3, 46295830), (5, 27777498), (6, 23147915), (7, 19841070), (10, 13888749), (14, 9920535), (15, 9259166), (21, 6613690), (30, 4629583), (35, 3968214), (42, 3306845), (70, 1984107), (105, 1322738), (210, 661369), (313, 443730), (626, 221865), (939, 147910), (1565, 88746), (1878, 73955), (2113, 65730), (2191, 63390), (3130, 44373), (4226, 32865), (4382, 31695), (4695, 29582), (6339, 21910), (6573, 21130), (9390, 14791), (10565, 13146), (10955, 12678)]

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