21507840

素因数分解:

$2^8\times 3^2\times 5^1\times {\mathrm{1867}}^1$

素因数の和:1894

約数の個数: 108

約数和(自身を含む): 74454744

約数和(自身を除く): 52946904

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, 576, 640, 720, 768, 960, 1152, 1280, 1440, 1867, 1920, 2304, 2880, 3734, 3840, 5601, 5760, 7468, 9335, 11202, 11520, 14936, 16803, 18670, 22404, 28005, 29872, 33606, 37340, 44808, 56010, 59744, 67212, 74680, 84015, 89616, 112020, 119488, 134424, 149360, 168030, 179232, 224040, 238976, 268848, 298720, 336060, 358464, 448080, 477952, 537696, 597440, 672120, 716928, 896160, 1075392, 1194880, 1344240, 1433856, 1792320, 2150784, 2389760, 2688480, 3584640, 4301568, 5376960, 7169280, 10753920, 21507840]

約数ペア:

[(1, 21507840), (2, 10753920), (3, 7169280), (4, 5376960), (5, 4301568), (6, 3584640), (8, 2688480), (9, 2389760), (10, 2150784), (12, 1792320), (15, 1433856), (16, 1344240), (18, 1194880), (20, 1075392), (24, 896160), (30, 716928), (32, 672120), (36, 597440), (40, 537696), (45, 477952), (48, 448080), (60, 358464), (64, 336060), (72, 298720), (80, 268848), (90, 238976), (96, 224040), (120, 179232), (128, 168030), (144, 149360), (160, 134424), (180, 119488), (192, 112020), (240, 89616), (256, 84015), (288, 74680), (320, 67212), (360, 59744), (384, 56010), (480, 44808), (576, 37340), (640, 33606), (720, 29872), (768, 28005), (960, 22404), (1152, 18670), (1280, 16803), (1440, 14936), (1867, 11520), (1920, 11202), (2304, 9335), (2880, 7468), (3734, 5760), (3840, 5601)]