256803840

素因数分解:

$2^{10}\times 3^2\times 5^1\times {\mathrm{5573}}^1$

素因数の和:5604

約数の個数: 132

約数和(自身を含む): 889978284

約数和(自身を除く): 633174444

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, 5573, 5760, 7680, 9216, 11146, 11520, 15360, 16719, 22292, 23040, 27865, 33438, 44584, 46080, 50157, 55730, 66876, 83595, 89168, 100314, 111460, 133752, 167190, 178336, 200628, 222920, 250785, 267504, 334380, 356672, 401256, 445840, 501570, 535008, 668760, 713344, 802512, 891680, 1003140, 1070016, 1337520, 1426688, 1605024, 1783360, 2006280, 2140032, 2675040, 2853376, 3210048, 3566720, 4012560, 4280064, 5350080, 5706752, 6420096, 7133440, 8025120, 8560128, 10700160, 12840192, 14266880, 16050240, 17120256, 21400320, 25680384, 28533760, 32100480, 42800640, 51360768, 64200960, 85601280, 128401920, 256803840]

約数ペア:

[(1, 256803840), (2, 128401920), (3, 85601280), (4, 64200960), (5, 51360768), (6, 42800640), (8, 32100480), (9, 28533760), (10, 25680384), (12, 21400320), (15, 17120256), (16, 16050240), (18, 14266880), (20, 12840192), (24, 10700160), (30, 8560128), (32, 8025120), (36, 7133440), (40, 6420096), (45, 5706752), (48, 5350080), (60, 4280064), (64, 4012560), (72, 3566720), (80, 3210048), (90, 2853376), (96, 2675040), (120, 2140032), (128, 2006280), (144, 1783360), (160, 1605024), (180, 1426688), (192, 1337520), (240, 1070016), (256, 1003140), (288, 891680), (320, 802512), (360, 713344), (384, 668760), (480, 535008), (512, 501570), (576, 445840), (640, 401256), (720, 356672), (768, 334380), (960, 267504), (1024, 250785), (1152, 222920), (1280, 200628), (1440, 178336), (1536, 167190), (1920, 133752), (2304, 111460), (2560, 100314), (2880, 89168), (3072, 83595), (3840, 66876), (4608, 55730), (5120, 50157), (5573, 46080), (5760, 44584), (7680, 33438), (9216, 27865), (11146, 23040), (11520, 22292), (15360, 16719)]