About the Number

1280840960

1280840959 ← → 1280840961

2進数表記:1001100010110000001010100000000

漢数字表記:十二億八千八十四万九百六十

素因数分解:

2 8 × 5 1 × 7 1 × 163 1 × 877 1

素因数の和:1068
約数の個数: 144
約数和(自身を含む): 3531835776
約数和(自身を除く): 2250994816

約数列:
[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 163, 224, 256, 280, 320, 326, 448, 560, 640, 652, 815, 877, 896, 1120, 1141, 1280, 1304, 1630, 1754, 1792, 2240, 2282, 2608, 3260, 3508, 4385, 4480, 4564, 5216, 5705, 6139, 6520, 7016, 8770, 8960, 9128, 10432, 11410, 12278, 13040, 14032, 17540, 18256, 20864, 22820, 24556, 26080, 28064, 30695, 35080, 36512, 41728, 45640, 49112, 52160, 56128, 61390, 70160, 73024, 91280, 98224, 104320, 112256, 122780, 140320, 142951, 146048, 182560, 196448, 208640, 224512, 245560, 280640, 285902, 292096, 365120, 392896, 491120, 561280, 571804, 714755, 730240, 785792, 982240, 1000657, 1122560, 1143608, 1429510, 1460480, 1571584, 1964480, 2001314, 2287216, 2859020, 3928960, 4002628, 4574432, 5003285, 5718040, 7857920, 8005256, 9148864, 10006570, 11436080, 16010512, 18297728, 20013140, 22872160, 32021024, 36595456, 40026280, 45744320, 64042048, 80052560, 91488640, 128084096, 160105120, 182977280, 256168192, 320210240, 640420480, 1280840960]

約数ペア:
[(1, 1280840960), (2, 640420480), (4, 320210240), (5, 256168192), (7, 182977280), (8, 160105120), (10, 128084096), (14, 91488640), (16, 80052560), (20, 64042048), (28, 45744320), (32, 40026280), (35, 36595456), (40, 32021024), (56, 22872160), (64, 20013140), (70, 18297728), (80, 16010512), (112, 11436080), (128, 10006570), (140, 9148864), (160, 8005256), (163, 7857920), (224, 5718040), (256, 5003285), (280, 4574432), (320, 4002628), (326, 3928960), (448, 2859020), (560, 2287216), (640, 2001314), (652, 1964480), (815, 1571584), (877, 1460480), (896, 1429510), (1120, 1143608), (1141, 1122560), (1280, 1000657), (1304, 982240), (1630, 785792), (1754, 730240), (1792, 714755), (2240, 571804), (2282, 561280), (2608, 491120), (3260, 392896), (3508, 365120), (4385, 292096), (4480, 285902), (4564, 280640), (5216, 245560), (5705, 224512), (6139, 208640), (6520, 196448), (7016, 182560), (8770, 146048), (8960, 142951), (9128, 140320), (10432, 122780), (11410, 112256), (12278, 104320), (13040, 98224), (14032, 91280), (17540, 73024), (18256, 70160), (20864, 61390), (22820, 56128), (24556, 52160), (26080, 49112), (28064, 45640), (30695, 41728), (35080, 36512)]

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