About the Number

28561491

28561490 ← → 28561492

2進数表記:1101100111101000001010011

漢数字表記:二千八百五十六万千四百九十一

素因数分解:

3 6 × 7 1 × 29 1 × 193 1

素因数の和:247
約数の個数: 56
約数和(自身を含む): 50890080
約数和(自身を除く): 22328589

約数列:
[1, 3, 7, 9, 21, 27, 29, 63, 81, 87, 189, 193, 203, 243, 261, 567, 579, 609, 729, 783, 1351, 1701, 1737, 1827, 2349, 4053, 5103, 5211, 5481, 5597, 7047, 12159, 15633, 16443, 16791, 21141, 36477, 39179, 46899, 49329, 50373, 109431, 117537, 140697, 147987, 151119, 328293, 352611, 453357, 984879, 1057833, 1360071, 3173499, 4080213, 9520497, 28561491]

約数ペア:
[(1, 28561491), (3, 9520497), (7, 4080213), (9, 3173499), (21, 1360071), (27, 1057833), (29, 984879), (63, 453357), (81, 352611), (87, 328293), (189, 151119), (193, 147987), (203, 140697), (243, 117537), (261, 109431), (567, 50373), (579, 49329), (609, 46899), (729, 39179), (783, 36477), (1351, 21141), (1701, 16791), (1737, 16443), (1827, 15633), (2349, 12159), (4053, 7047), (5103, 5597), (5211, 5481)]

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