20920320

素因数分解:

$2^{11}\times 3^2\times 5^1\times {\mathrm{227}}^1$

素因数の和:260

約数の個数: 144

約数和(自身を含む): 72825480

約数和(自身を除く): 51905160

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, 227, 240, 256, 288, 320, 360, 384, 454, 480, 512, 576, 640, 681, 720, 768, 908, 960, 1024, 1135, 1152, 1280, 1362, 1440, 1536, 1816, 1920, 2043, 2048, 2270, 2304, 2560, 2724, 2880, 3072, 3405, 3632, 3840, 4086, 4540, 4608, 5120, 5448, 5760, 6144, 6810, 7264, 7680, 8172, 9080, 9216, 10215, 10240, 10896, 11520, 13620, 14528, 15360, 16344, 18160, 18432, 20430, 21792, 23040, 27240, 29056, 30720, 32688, 36320, 40860, 43584, 46080, 54480, 58112, 65376, 72640, 81720, 87168, 92160, 108960, 116224, 130752, 145280, 163440, 174336, 217920, 232448, 261504, 290560, 326880, 348672, 435840, 464896, 523008, 581120, 653760, 697344, 871680, 1046016, 1162240, 1307520, 1394688, 1743360, 2092032, 2324480, 2615040, 3486720, 4184064, 5230080, 6973440, 10460160, 20920320]

約数ペア:

[(1, 20920320), (2, 10460160), (3, 6973440), (4, 5230080), (5, 4184064), (6, 3486720), (8, 2615040), (9, 2324480), (10, 2092032), (12, 1743360), (15, 1394688), (16, 1307520), (18, 1162240), (20, 1046016), (24, 871680), (30, 697344), (32, 653760), (36, 581120), (40, 523008), (45, 464896), (48, 435840), (60, 348672), (64, 326880), (72, 290560), (80, 261504), (90, 232448), (96, 217920), (120, 174336), (128, 163440), (144, 145280), (160, 130752), (180, 116224), (192, 108960), (227, 92160), (240, 87168), (256, 81720), (288, 72640), (320, 65376), (360, 58112), (384, 54480), (454, 46080), (480, 43584), (512, 40860), (576, 36320), (640, 32688), (681, 30720), (720, 29056), (768, 27240), (908, 23040), (960, 21792), (1024, 20430), (1135, 18432), (1152, 18160), (1280, 16344), (1362, 15360), (1440, 14528), (1536, 13620), (1816, 11520), (1920, 10896), (2043, 10240), (2048, 10215), (2270, 9216), (2304, 9080), (2560, 8172), (2724, 7680), (2880, 7264), (3072, 6810), (3405, 6144), (3632, 5760), (3840, 5448), (4086, 5120), (4540, 4608)]