81457920

素因数分解:

$2^8\times 3^3\times 5^1\times {\mathrm{2357}}^1$

素因数の和:2387

約数の個数: 144

約数和(自身を含む): 289185120

約数和(自身を除く): 207727200

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 90, 96, 108, 120, 128, 135, 144, 160, 180, 192, 216, 240, 256, 270, 288, 320, 360, 384, 432, 480, 540, 576, 640, 720, 768, 864, 960, 1080, 1152, 1280, 1440, 1728, 1920, 2160, 2304, 2357, 2880, 3456, 3840, 4320, 4714, 5760, 6912, 7071, 8640, 9428, 11520, 11785, 14142, 17280, 18856, 21213, 23570, 28284, 34560, 35355, 37712, 42426, 47140, 56568, 63639, 70710, 75424, 84852, 94280, 106065, 113136, 127278, 141420, 150848, 169704, 188560, 212130, 226272, 254556, 282840, 301696, 318195, 339408, 377120, 424260, 452544, 509112, 565680, 603392, 636390, 678816, 754240, 848520, 905088, 1018224, 1131360, 1272780, 1357632, 1508480, 1697040, 1810176, 2036448, 2262720, 2545560, 2715264, 3016960, 3394080, 4072896, 4525440, 5091120, 5430528, 6788160, 8145792, 9050880, 10182240, 13576320, 16291584, 20364480, 27152640, 40728960, 81457920]

約数ペア:

[(1, 81457920), (2, 40728960), (3, 27152640), (4, 20364480), (5, 16291584), (6, 13576320), (8, 10182240), (9, 9050880), (10, 8145792), (12, 6788160), (15, 5430528), (16, 5091120), (18, 4525440), (20, 4072896), (24, 3394080), (27, 3016960), (30, 2715264), (32, 2545560), (36, 2262720), (40, 2036448), (45, 1810176), (48, 1697040), (54, 1508480), (60, 1357632), (64, 1272780), (72, 1131360), (80, 1018224), (90, 905088), (96, 848520), (108, 754240), (120, 678816), (128, 636390), (135, 603392), (144, 565680), (160, 509112), (180, 452544), (192, 424260), (216, 377120), (240, 339408), (256, 318195), (270, 301696), (288, 282840), (320, 254556), (360, 226272), (384, 212130), (432, 188560), (480, 169704), (540, 150848), (576, 141420), (640, 127278), (720, 113136), (768, 106065), (864, 94280), (960, 84852), (1080, 75424), (1152, 70710), (1280, 63639), (1440, 56568), (1728, 47140), (1920, 42426), (2160, 37712), (2304, 35355), (2357, 34560), (2880, 28284), (3456, 23570), (3840, 21213), (4320, 18856), (4714, 17280), (5760, 14142), (6912, 11785), (7071, 11520), (8640, 9428)]