About the Number

2021076981

2021076980 ← → 2021076982

2進数表記:1111000011101110010111111110101

漢数字表記:二十億二千百七万六千九百八十一

素因数分解:

3 3 × 7 2 × 11 1 × 113 1 × 1229 1

素因数の和:1376
約数の個数: 96
約数和(自身を含む): 3836419200
約数和(自身を除く): 1815342219

約数列:
[1, 3, 7, 9, 11, 21, 27, 33, 49, 63, 77, 99, 113, 147, 189, 231, 297, 339, 441, 539, 693, 791, 1017, 1229, 1243, 1323, 1617, 2079, 2373, 3051, 3687, 3729, 4851, 5537, 7119, 8603, 8701, 11061, 11187, 13519, 14553, 16611, 21357, 25809, 26103, 33183, 33561, 40557, 49833, 60221, 60907, 77427, 78309, 94633, 121671, 138877, 149499, 180663, 182721, 232281, 234927, 283899, 365013, 416631, 541989, 548163, 662431, 851697, 972139, 1249893, 1527647, 1625967, 1644489, 1987293, 2555091, 2916417, 3749679, 4582941, 5961879, 6804973, 8749251, 10693529, 13748823, 17885637, 20414919, 26247753, 32080587, 41246469, 61244757, 74854703, 96241761, 183734271, 224564109, 288725283, 673692327, 2021076981]

約数ペア:
[(1, 2021076981), (3, 673692327), (7, 288725283), (9, 224564109), (11, 183734271), (21, 96241761), (27, 74854703), (33, 61244757), (49, 41246469), (63, 32080587), (77, 26247753), (99, 20414919), (113, 17885637), (147, 13748823), (189, 10693529), (231, 8749251), (297, 6804973), (339, 5961879), (441, 4582941), (539, 3749679), (693, 2916417), (791, 2555091), (1017, 1987293), (1229, 1644489), (1243, 1625967), (1323, 1527647), (1617, 1249893), (2079, 972139), (2373, 851697), (3051, 662431), (3687, 548163), (3729, 541989), (4851, 416631), (5537, 365013), (7119, 283899), (8603, 234927), (8701, 232281), (11061, 182721), (11187, 180663), (13519, 149499), (14553, 138877), (16611, 121671), (21357, 94633), (25809, 78309), (26103, 77427), (33183, 60907), (33561, 60221), (40557, 49833)]

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