1280048640

素因数分解:

$2^9\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{12821}}^1$

素因数の和:12860

約数の個数: 160

約数和(自身を含む): 4407280416

約数和(自身を除く): 3127231776

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 78, 80, 96, 104, 120, 128, 130, 156, 160, 192, 195, 208, 240, 256, 260, 312, 320, 384, 390, 416, 480, 512, 520, 624, 640, 768, 780, 832, 960, 1040, 1248, 1280, 1536, 1560, 1664, 1920, 2080, 2496, 2560, 3120, 3328, 3840, 4160, 4992, 6240, 6656, 7680, 8320, 9984, 12480, 12821, 16640, 19968, 24960, 25642, 33280, 38463, 49920, 51284, 64105, 76926, 99840, 102568, 128210, 153852, 166673, 192315, 205136, 256420, 307704, 333346, 384630, 410272, 500019, 512840, 615408, 666692, 769260, 820544, 833365, 1000038, 1025680, 1230816, 1333384, 1538520, 1641088, 1666730, 2000076, 2051360, 2461632, 2500095, 2666768, 3077040, 3282176, 3333460, 4000152, 4102720, 4923264, 5000190, 5333536, 6154080, 6564352, 6666920, 8000304, 8205440, 9846528, 10000380, 10667072, 12308160, 13333840, 16000608, 16410880, 19693056, 20000760, 21334144, 24616320, 26667680, 32001216, 32821760, 40001520, 42668288, 49232640, 53335360, 64002432, 80003040, 85336576, 98465280, 106670720, 128004864, 160006080, 213341440, 256009728, 320012160, 426682880, 640024320, 1280048640]

約数ペア:

[(1, 1280048640), (2, 640024320), (3, 426682880), (4, 320012160), (5, 256009728), (6, 213341440), (8, 160006080), (10, 128004864), (12, 106670720), (13, 98465280), (15, 85336576), (16, 80003040), (20, 64002432), (24, 53335360), (26, 49232640), (30, 42668288), (32, 40001520), (39, 32821760), (40, 32001216), (48, 26667680), (52, 24616320), (60, 21334144), (64, 20000760), (65, 19693056), (78, 16410880), (80, 16000608), (96, 13333840), (104, 12308160), (120, 10667072), (128, 10000380), (130, 9846528), (156, 8205440), (160, 8000304), (192, 6666920), (195, 6564352), (208, 6154080), (240, 5333536), (256, 5000190), (260, 4923264), (312, 4102720), (320, 4000152), (384, 3333460), (390, 3282176), (416, 3077040), (480, 2666768), (512, 2500095), (520, 2461632), (624, 2051360), (640, 2000076), (768, 1666730), (780, 1641088), (832, 1538520), (960, 1333384), (1040, 1230816), (1248, 1025680), (1280, 1000038), (1536, 833365), (1560, 820544), (1664, 769260), (1920, 666692), (2080, 615408), (2496, 512840), (2560, 500019), (3120, 410272), (3328, 384630), (3840, 333346), (4160, 307704), (4992, 256420), (6240, 205136), (6656, 192315), (7680, 166673), (8320, 153852), (9984, 128210), (12480, 102568), (12821, 99840), (16640, 76926), (19968, 64105), (24960, 51284), (25642, 49920), (33280, 38463)]