About the Number

1281185280

1281185279 ← → 1281185281

2進数表記:1001100010111010101011000000000

漢数字表記:十二億八千百十八万五千二百八十

素因数分解:

2 9 × 3 2 × 5 1 × 17 1 × 3271 1

素因数の和:3317
約数の個数: 240
約数和(自身を含む): 4699547424
約数和(自身を除く): 3418362144

約数列:
[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 30, 32, 34, 36, 40, 45, 48, 51, 60, 64, 68, 72, 80, 85, 90, 96, 102, 120, 128, 136, 144, 153, 160, 170, 180, 192, 204, 240, 255, 256, 272, 288, 306, 320, 340, 360, 384, 408, 480, 510, 512, 544, 576, 612, 640, 680, 720, 765, 768, 816, 960, 1020, 1088, 1152, 1224, 1280, 1360, 1440, 1530, 1536, 1632, 1920, 2040, 2176, 2304, 2448, 2560, 2720, 2880, 3060, 3264, 3271, 3840, 4080, 4352, 4608, 4896, 5440, 5760, 6120, 6528, 6542, 7680, 8160, 8704, 9792, 9813, 10880, 11520, 12240, 13056, 13084, 16320, 16355, 19584, 19626, 21760, 23040, 24480, 26112, 26168, 29439, 32640, 32710, 39168, 39252, 43520, 48960, 49065, 52336, 55607, 58878, 65280, 65420, 78336, 78504, 97920, 98130, 104672, 111214, 117756, 130560, 130840, 147195, 157008, 166821, 195840, 196260, 209344, 222428, 235512, 261680, 278035, 294390, 314016, 333642, 391680, 392520, 418688, 444856, 471024, 500463, 523360, 556070, 588780, 628032, 667284, 785040, 834105, 837376, 889712, 942048, 1000926, 1046720, 1112140, 1177560, 1256064, 1334568, 1570080, 1668210, 1674752, 1779424, 1884096, 2001852, 2093440, 2224280, 2355120, 2502315, 2512128, 2669136, 3140160, 3336420, 3558848, 3768192, 4003704, 4186880, 4448560, 4710240, 5004630, 5024256, 5338272, 6280320, 6672840, 7117696, 7536384, 8007408, 8373760, 8897120, 9420480, 10009260, 10676544, 12560640, 13345680, 14235392, 15072768, 16014816, 17794240, 18840960, 20018520, 21353088, 25121280, 26691360, 28470784, 32029632, 35588480, 37681920, 40037040, 42706176, 53382720, 64059264, 71176960, 75363840, 80074080, 85412352, 106765440, 128118528, 142353920, 160148160, 213530880, 256237056, 320296320, 427061760, 640592640, 1281185280]

約数ペア:
[(1, 1281185280), (2, 640592640), (3, 427061760), (4, 320296320), (5, 256237056), (6, 213530880), (8, 160148160), (9, 142353920), (10, 128118528), (12, 106765440), (15, 85412352), (16, 80074080), (17, 75363840), (18, 71176960), (20, 64059264), (24, 53382720), (30, 42706176), (32, 40037040), (34, 37681920), (36, 35588480), (40, 32029632), (45, 28470784), (48, 26691360), (51, 25121280), (60, 21353088), (64, 20018520), (68, 18840960), (72, 17794240), (80, 16014816), (85, 15072768), (90, 14235392), (96, 13345680), (102, 12560640), (120, 10676544), (128, 10009260), (136, 9420480), (144, 8897120), (153, 8373760), (160, 8007408), (170, 7536384), (180, 7117696), (192, 6672840), (204, 6280320), (240, 5338272), (255, 5024256), (256, 5004630), (272, 4710240), (288, 4448560), (306, 4186880), (320, 4003704), (340, 3768192), (360, 3558848), (384, 3336420), (408, 3140160), (480, 2669136), (510, 2512128), (512, 2502315), (544, 2355120), (576, 2224280), (612, 2093440), (640, 2001852), (680, 1884096), (720, 1779424), (765, 1674752), (768, 1668210), (816, 1570080), (960, 1334568), (1020, 1256064), (1088, 1177560), (1152, 1112140), (1224, 1046720), (1280, 1000926), (1360, 942048), (1440, 889712), (1530, 837376), (1536, 834105), (1632, 785040), (1920, 667284), (2040, 628032), (2176, 588780), (2304, 556070), (2448, 523360), (2560, 500463), (2720, 471024), (2880, 444856), (3060, 418688), (3264, 392520), (3271, 391680), (3840, 333642), (4080, 314016), (4352, 294390), (4608, 278035), (4896, 261680), (5440, 235512), (5760, 222428), (6120, 209344), (6528, 196260), (6542, 195840), (7680, 166821), (8160, 157008), (8704, 147195), (9792, 130840), (9813, 130560), (10880, 117756), (11520, 111214), (12240, 104672), (13056, 98130), (13084, 97920), (16320, 78504), (16355, 78336), (19584, 65420), (19626, 65280), (21760, 58878), (23040, 55607), (24480, 52336), (26112, 49065), (26168, 48960), (29439, 43520), (32640, 39252), (32710, 39168)]

このpageの処理時間: 0.011183738708496094 seconds