18721920

素因数分解:

$2^7\times 3^1\times 5^1\times 7^2\times {\mathrm{199}}^1$

素因数の和:235

約数の個数: 192

約数和(自身を含む): 69768000

約数和(自身を除く): 51046080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 49, 56, 60, 64, 70, 80, 84, 96, 98, 105, 112, 120, 128, 140, 147, 160, 168, 192, 196, 199, 210, 224, 240, 245, 280, 294, 320, 336, 384, 392, 398, 420, 448, 480, 490, 560, 588, 597, 640, 672, 735, 784, 796, 840, 896, 960, 980, 995, 1120, 1176, 1194, 1344, 1393, 1470, 1568, 1592, 1680, 1920, 1960, 1990, 2240, 2352, 2388, 2688, 2786, 2940, 2985, 3136, 3184, 3360, 3920, 3980, 4179, 4480, 4704, 4776, 5572, 5880, 5970, 6272, 6368, 6720, 6965, 7840, 7960, 8358, 9408, 9552, 9751, 11144, 11760, 11940, 12736, 13440, 13930, 15680, 15920, 16716, 18816, 19104, 19502, 20895, 22288, 23520, 23880, 25472, 27860, 29253, 31360, 31840, 33432, 38208, 39004, 41790, 44576, 47040, 47760, 48755, 55720, 58506, 63680, 66864, 76416, 78008, 83580, 89152, 94080, 95520, 97510, 111440, 117012, 127360, 133728, 146265, 156016, 167160, 178304, 191040, 195020, 222880, 234024, 267456, 292530, 312032, 334320, 382080, 390040, 445760, 468048, 534912, 585060, 624064, 668640, 780080, 891520, 936096, 1170120, 1248128, 1337280, 1560160, 1872192, 2340240, 2674560, 3120320, 3744384, 4680480, 6240640, 9360960, 18721920]

約数ペア:

[(1, 18721920), (2, 9360960), (3, 6240640), (4, 4680480), (5, 3744384), (6, 3120320), (7, 2674560), (8, 2340240), (10, 1872192), (12, 1560160), (14, 1337280), (15, 1248128), (16, 1170120), (20, 936096), (21, 891520), (24, 780080), (28, 668640), (30, 624064), (32, 585060), (35, 534912), (40, 468048), (42, 445760), (48, 390040), (49, 382080), (56, 334320), (60, 312032), (64, 292530), (70, 267456), (80, 234024), (84, 222880), (96, 195020), (98, 191040), (105, 178304), (112, 167160), (120, 156016), (128, 146265), (140, 133728), (147, 127360), (160, 117012), (168, 111440), (192, 97510), (196, 95520), (199, 94080), (210, 89152), (224, 83580), (240, 78008), (245, 76416), (280, 66864), (294, 63680), (320, 58506), (336, 55720), (384, 48755), (392, 47760), (398, 47040), (420, 44576), (448, 41790), (480, 39004), (490, 38208), (560, 33432), (588, 31840), (597, 31360), (640, 29253), (672, 27860), (735, 25472), (784, 23880), (796, 23520), (840, 22288), (896, 20895), (960, 19502), (980, 19104), (995, 18816), (1120, 16716), (1176, 15920), (1194, 15680), (1344, 13930), (1393, 13440), (1470, 12736), (1568, 11940), (1592, 11760), (1680, 11144), (1920, 9751), (1960, 9552), (1990, 9408), (2240, 8358), (2352, 7960), (2388, 7840), (2688, 6965), (2786, 6720), (2940, 6368), (2985, 6272), (3136, 5970), (3184, 5880), (3360, 5572), (3920, 4776), (3980, 4704), (4179, 4480)]