256440960

素因数分解:

$2^7\times 3^2\times 5^1\times {\mathrm{211}}^2$

素因数の和:447

約数の個数: 144

約数和(自身を含む): 889739370

約数和(自身を除く): 633298410

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, 211, 240, 288, 320, 360, 384, 422, 480, 576, 633, 640, 720, 844, 960, 1055, 1152, 1266, 1440, 1688, 1899, 1920, 2110, 2532, 2880, 3165, 3376, 3798, 4220, 5064, 5760, 6330, 6752, 7596, 8440, 9495, 10128, 12660, 13504, 15192, 16880, 18990, 20256, 25320, 27008, 30384, 33760, 37980, 40512, 44521, 50640, 60768, 67520, 75960, 81024, 89042, 101280, 121536, 133563, 135040, 151920, 178084, 202560, 222605, 243072, 267126, 303840, 356168, 400689, 405120, 445210, 534252, 607680, 667815, 712336, 801378, 890420, 1068504, 1215360, 1335630, 1424672, 1602756, 1780840, 2003445, 2137008, 2671260, 2849344, 3205512, 3561680, 4006890, 4274016, 5342520, 5698688, 6411024, 7123360, 8013780, 8548032, 10685040, 12822048, 14246720, 16027560, 17096064, 21370080, 25644096, 28493440, 32055120, 42740160, 51288192, 64110240, 85480320, 128220480, 256440960]

約数ペア:

[(1, 256440960), (2, 128220480), (3, 85480320), (4, 64110240), (5, 51288192), (6, 42740160), (8, 32055120), (9, 28493440), (10, 25644096), (12, 21370080), (15, 17096064), (16, 16027560), (18, 14246720), (20, 12822048), (24, 10685040), (30, 8548032), (32, 8013780), (36, 7123360), (40, 6411024), (45, 5698688), (48, 5342520), (60, 4274016), (64, 4006890), (72, 3561680), (80, 3205512), (90, 2849344), (96, 2671260), (120, 2137008), (128, 2003445), (144, 1780840), (160, 1602756), (180, 1424672), (192, 1335630), (211, 1215360), (240, 1068504), (288, 890420), (320, 801378), (360, 712336), (384, 667815), (422, 607680), (480, 534252), (576, 445210), (633, 405120), (640, 400689), (720, 356168), (844, 303840), (960, 267126), (1055, 243072), (1152, 222605), (1266, 202560), (1440, 178084), (1688, 151920), (1899, 135040), (1920, 133563), (2110, 121536), (2532, 101280), (2880, 89042), (3165, 81024), (3376, 75960), (3798, 67520), (4220, 60768), (5064, 50640), (5760, 44521), (6330, 40512), (6752, 37980), (7596, 33760), (8440, 30384), (9495, 27008), (10128, 25320), (12660, 20256), (13504, 18990), (15192, 16880)]