About the Number

128872800

128872799 ← → 128872801

2進数表記:111101011100111000101100000

漢数字表記:一億二千八百八十七万二千八百

素因数分解:

2 5 × 3 2 × 5 2 × 7 1 × 2557 1

素因数の和:2590
約数の個数: 216
約数和(自身を含む): 519560496
約数和(自身を除く): 390687696

約数列:
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 25, 28, 30, 32, 35, 36, 40, 42, 45, 48, 50, 56, 60, 63, 70, 72, 75, 80, 84, 90, 96, 100, 105, 112, 120, 126, 140, 144, 150, 160, 168, 175, 180, 200, 210, 224, 225, 240, 252, 280, 288, 300, 315, 336, 350, 360, 400, 420, 450, 480, 504, 525, 560, 600, 630, 672, 700, 720, 800, 840, 900, 1008, 1050, 1120, 1200, 1260, 1400, 1440, 1575, 1680, 1800, 2016, 2100, 2400, 2520, 2557, 2800, 3150, 3360, 3600, 4200, 5040, 5114, 5600, 6300, 7200, 7671, 8400, 10080, 10228, 12600, 12785, 15342, 16800, 17899, 20456, 23013, 25200, 25570, 30684, 35798, 38355, 40912, 46026, 50400, 51140, 53697, 61368, 63925, 71596, 76710, 81824, 89495, 92052, 102280, 107394, 115065, 122736, 127850, 143192, 153420, 161091, 178990, 184104, 191775, 204560, 214788, 230130, 245472, 255700, 268485, 286384, 306840, 322182, 357980, 368208, 383550, 409120, 429576, 447475, 460260, 511400, 536970, 572768, 575325, 613680, 644364, 715960, 736416, 767100, 805455, 859152, 894950, 920520, 1022800, 1073940, 1150650, 1227360, 1288728, 1342425, 1431920, 1534200, 1610910, 1718304, 1789900, 1841040, 2045600, 2147880, 2301300, 2577456, 2684850, 2863840, 3068400, 3221820, 3579800, 3682080, 4027275, 4295760, 4602600, 5154912, 5369700, 6136800, 6443640, 7159600, 8054550, 8591520, 9205200, 10739400, 12887280, 14319200, 16109100, 18410400, 21478800, 25774560, 32218200, 42957600, 64436400, 128872800]

約数ペア:
[(1, 128872800), (2, 64436400), (3, 42957600), (4, 32218200), (5, 25774560), (6, 21478800), (7, 18410400), (8, 16109100), (9, 14319200), (10, 12887280), (12, 10739400), (14, 9205200), (15, 8591520), (16, 8054550), (18, 7159600), (20, 6443640), (21, 6136800), (24, 5369700), (25, 5154912), (28, 4602600), (30, 4295760), (32, 4027275), (35, 3682080), (36, 3579800), (40, 3221820), (42, 3068400), (45, 2863840), (48, 2684850), (50, 2577456), (56, 2301300), (60, 2147880), (63, 2045600), (70, 1841040), (72, 1789900), (75, 1718304), (80, 1610910), (84, 1534200), (90, 1431920), (96, 1342425), (100, 1288728), (105, 1227360), (112, 1150650), (120, 1073940), (126, 1022800), (140, 920520), (144, 894950), (150, 859152), (160, 805455), (168, 767100), (175, 736416), (180, 715960), (200, 644364), (210, 613680), (224, 575325), (225, 572768), (240, 536970), (252, 511400), (280, 460260), (288, 447475), (300, 429576), (315, 409120), (336, 383550), (350, 368208), (360, 357980), (400, 322182), (420, 306840), (450, 286384), (480, 268485), (504, 255700), (525, 245472), (560, 230130), (600, 214788), (630, 204560), (672, 191775), (700, 184104), (720, 178990), (800, 161091), (840, 153420), (900, 143192), (1008, 127850), (1050, 122736), (1120, 115065), (1200, 107394), (1260, 102280), (1400, 92052), (1440, 89495), (1575, 81824), (1680, 76710), (1800, 71596), (2016, 63925), (2100, 61368), (2400, 53697), (2520, 51140), (2557, 50400), (2800, 46026), (3150, 40912), (3360, 38355), (3600, 35798), (4200, 30684), (5040, 25570), (5114, 25200), (5600, 23013), (6300, 20456), (7200, 17899), (7671, 16800), (8400, 15342), (10080, 12785), (10228, 12600)]

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