About the Number

128691290

128691289 ← → 128691291

2進数表記:111101010111010110001011010

漢数字表記:一億二千八百六十九万千二百九十

素因数分解:

2 1 × 5 1 × 7 1 × 13 1 × 103 1 × 1373 1

素因数の和:1503
約数の個数: 64
約数和(自身を含む): 288078336
約数和(自身を除く): 159387046

約数列:
[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 103, 130, 182, 206, 455, 515, 721, 910, 1030, 1339, 1373, 1442, 2678, 2746, 3605, 6695, 6865, 7210, 9373, 9611, 13390, 13730, 17849, 18746, 19222, 35698, 46865, 48055, 89245, 93730, 96110, 124943, 141419, 178490, 249886, 282838, 624715, 707095, 989933, 1249430, 1414190, 1838447, 1979866, 3676894, 4949665, 9192235, 9899330, 12869129, 18384470, 25738258, 64345645, 128691290]

約数ペア:
[(1, 128691290), (2, 64345645), (5, 25738258), (7, 18384470), (10, 12869129), (13, 9899330), (14, 9192235), (26, 4949665), (35, 3676894), (65, 1979866), (70, 1838447), (91, 1414190), (103, 1249430), (130, 989933), (182, 707095), (206, 624715), (455, 282838), (515, 249886), (721, 178490), (910, 141419), (1030, 124943), (1339, 96110), (1373, 93730), (1442, 89245), (2678, 48055), (2746, 46865), (3605, 35698), (6695, 19222), (6865, 18746), (7210, 17849), (9373, 13730), (9611, 13390)]

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