1280609280

素因数分解:

$2^{10}\times 3^2\times 5^1\times {\mathrm{27791}}^1$

素因数の和:27822

約数の個数: 132

約数和(自身を含む): 4437437472

約数和(自身を除く): 3156828192

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 120, 128, 144, 160, 180, 192, 240, 256, 288, 320, 360, 384, 480, 512, 576, 640, 720, 768, 960, 1024, 1152, 1280, 1440, 1536, 1920, 2304, 2560, 2880, 3072, 3840, 4608, 5120, 5760, 7680, 9216, 11520, 15360, 23040, 27791, 46080, 55582, 83373, 111164, 138955, 166746, 222328, 250119, 277910, 333492, 416865, 444656, 500238, 555820, 666984, 833730, 889312, 1000476, 1111640, 1250595, 1333968, 1667460, 1778624, 2000952, 2223280, 2501190, 2667936, 3334920, 3557248, 4001904, 4446560, 5002380, 5335872, 6669840, 7114496, 8003808, 8893120, 10004760, 10671744, 13339680, 14228992, 16007616, 17786240, 20009520, 21343488, 26679360, 28457984, 32015232, 35572480, 40019040, 42686976, 53358720, 64030464, 71144960, 80038080, 85373952, 106717440, 128060928, 142289920, 160076160, 213434880, 256121856, 320152320, 426869760, 640304640, 1280609280]

約数ペア:

[(1, 1280609280), (2, 640304640), (3, 426869760), (4, 320152320), (5, 256121856), (6, 213434880), (8, 160076160), (9, 142289920), (10, 128060928), (12, 106717440), (15, 85373952), (16, 80038080), (18, 71144960), (20, 64030464), (24, 53358720), (30, 42686976), (32, 40019040), (36, 35572480), (40, 32015232), (45, 28457984), (48, 26679360), (60, 21343488), (64, 20009520), (72, 17786240), (80, 16007616), (90, 14228992), (96, 13339680), (120, 10671744), (128, 10004760), (144, 8893120), (160, 8003808), (180, 7114496), (192, 6669840), (240, 5335872), (256, 5002380), (288, 4446560), (320, 4001904), (360, 3557248), (384, 3334920), (480, 2667936), (512, 2501190), (576, 2223280), (640, 2000952), (720, 1778624), (768, 1667460), (960, 1333968), (1024, 1250595), (1152, 1111640), (1280, 1000476), (1440, 889312), (1536, 833730), (1920, 666984), (2304, 555820), (2560, 500238), (2880, 444656), (3072, 416865), (3840, 333492), (4608, 277910), (5120, 250119), (5760, 222328), (7680, 166746), (9216, 138955), (11520, 111164), (15360, 83373), (23040, 55582), (27791, 46080)]