21018240

素因数分解:

$2^7\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1$

素因数の和:155

約数の個数: 192

約数和(自身を含む): 75184200

約数和(自身を除く): 54165960

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 41, 45, 48, 60, 64, 72, 80, 82, 89, 90, 96, 120, 123, 128, 144, 160, 164, 178, 180, 192, 205, 240, 246, 267, 288, 320, 328, 356, 360, 369, 384, 410, 445, 480, 492, 534, 576, 615, 640, 656, 712, 720, 738, 801, 820, 890, 960, 984, 1068, 1152, 1230, 1312, 1335, 1424, 1440, 1476, 1602, 1640, 1780, 1845, 1920, 1968, 2136, 2460, 2624, 2670, 2848, 2880, 2952, 3204, 3280, 3560, 3649, 3690, 3936, 4005, 4272, 4920, 5248, 5340, 5696, 5760, 5904, 6408, 6560, 7120, 7298, 7380, 7872, 8010, 8544, 9840, 10680, 10947, 11392, 11808, 12816, 13120, 14240, 14596, 14760, 15744, 16020, 17088, 18245, 19680, 21360, 21894, 23616, 25632, 26240, 28480, 29192, 29520, 32040, 32841, 34176, 36490, 39360, 42720, 43788, 47232, 51264, 54735, 56960, 58384, 59040, 64080, 65682, 72980, 78720, 85440, 87576, 102528, 109470, 116768, 118080, 128160, 131364, 145960, 164205, 170880, 175152, 218940, 233536, 236160, 256320, 262728, 291920, 328410, 350304, 437880, 467072, 512640, 525456, 583840, 656820, 700608, 875760, 1050912, 1167680, 1313640, 1401216, 1751520, 2101824, 2335360, 2627280, 3503040, 4203648, 5254560, 7006080, 10509120, 21018240]

約数ペア:

[(1, 21018240), (2, 10509120), (3, 7006080), (4, 5254560), (5, 4203648), (6, 3503040), (8, 2627280), (9, 2335360), (10, 2101824), (12, 1751520), (15, 1401216), (16, 1313640), (18, 1167680), (20, 1050912), (24, 875760), (30, 700608), (32, 656820), (36, 583840), (40, 525456), (41, 512640), (45, 467072), (48, 437880), (60, 350304), (64, 328410), (72, 291920), (80, 262728), (82, 256320), (89, 236160), (90, 233536), (96, 218940), (120, 175152), (123, 170880), (128, 164205), (144, 145960), (160, 131364), (164, 128160), (178, 118080), (180, 116768), (192, 109470), (205, 102528), (240, 87576), (246, 85440), (267, 78720), (288, 72980), (320, 65682), (328, 64080), (356, 59040), (360, 58384), (369, 56960), (384, 54735), (410, 51264), (445, 47232), (480, 43788), (492, 42720), (534, 39360), (576, 36490), (615, 34176), (640, 32841), (656, 32040), (712, 29520), (720, 29192), (738, 28480), (801, 26240), (820, 25632), (890, 23616), (960, 21894), (984, 21360), (1068, 19680), (1152, 18245), (1230, 17088), (1312, 16020), (1335, 15744), (1424, 14760), (1440, 14596), (1476, 14240), (1602, 13120), (1640, 12816), (1780, 11808), (1845, 11392), (1920, 10947), (1968, 10680), (2136, 9840), (2460, 8544), (2624, 8010), (2670, 7872), (2848, 7380), (2880, 7298), (2952, 7120), (3204, 6560), (3280, 6408), (3560, 5904), (3649, 5760), (3690, 5696), (3936, 5340), (4005, 5248), (4272, 4920)]