15981840

素因数分解:

$2^4\times 3^3\times 5^1\times 7^2\times {\mathrm{151}}^1$

素因数の和:187

約数の個数: 240

約数和(自身を含む): 64460160

約数和(自身を除く): 48478320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 48, 49, 54, 56, 60, 63, 70, 72, 80, 84, 90, 98, 105, 108, 112, 120, 126, 135, 140, 144, 147, 151, 168, 180, 189, 196, 210, 216, 240, 245, 252, 270, 280, 294, 302, 315, 336, 360, 378, 392, 420, 432, 441, 453, 490, 504, 540, 560, 588, 604, 630, 720, 735, 755, 756, 784, 840, 882, 906, 945, 980, 1008, 1057, 1080, 1176, 1208, 1260, 1323, 1359, 1470, 1510, 1512, 1680, 1764, 1812, 1890, 1960, 2114, 2160, 2205, 2265, 2352, 2416, 2520, 2646, 2718, 2940, 3020, 3024, 3171, 3528, 3624, 3780, 3920, 4077, 4228, 4410, 4530, 5040, 5285, 5292, 5436, 5880, 6040, 6342, 6615, 6795, 7056, 7248, 7399, 7560, 8154, 8456, 8820, 9060, 9513, 10570, 10584, 10872, 11760, 12080, 12684, 13230, 13590, 14798, 15120, 15855, 16308, 16912, 17640, 18120, 19026, 20385, 21140, 21168, 21744, 22197, 25368, 26460, 27180, 28539, 29596, 31710, 32616, 35280, 36240, 36995, 38052, 40770, 42280, 44394, 47565, 50736, 52920, 54360, 57078, 59192, 63420, 65232, 66591, 73990, 76104, 81540, 84560, 88788, 95130, 105840, 108720, 110985, 114156, 118384, 126840, 133182, 142695, 147980, 152208, 163080, 177576, 190260, 199773, 221970, 228312, 253680, 266364, 285390, 295960, 326160, 332955, 355152, 380520, 399546, 443940, 456624, 532728, 570780, 591920, 665910, 761040, 799092, 887880, 998865, 1065456, 1141560, 1331820, 1598184, 1775760, 1997730, 2283120, 2663640, 3196368, 3995460, 5327280, 7990920, 15981840]

約数ペア:

[(1, 15981840), (2, 7990920), (3, 5327280), (4, 3995460), (5, 3196368), (6, 2663640), (7, 2283120), (8, 1997730), (9, 1775760), (10, 1598184), (12, 1331820), (14, 1141560), (15, 1065456), (16, 998865), (18, 887880), (20, 799092), (21, 761040), (24, 665910), (27, 591920), (28, 570780), (30, 532728), (35, 456624), (36, 443940), (40, 399546), (42, 380520), (45, 355152), (48, 332955), (49, 326160), (54, 295960), (56, 285390), (60, 266364), (63, 253680), (70, 228312), (72, 221970), (80, 199773), (84, 190260), (90, 177576), (98, 163080), (105, 152208), (108, 147980), (112, 142695), (120, 133182), (126, 126840), (135, 118384), (140, 114156), (144, 110985), (147, 108720), (151, 105840), (168, 95130), (180, 88788), (189, 84560), (196, 81540), (210, 76104), (216, 73990), (240, 66591), (245, 65232), (252, 63420), (270, 59192), (280, 57078), (294, 54360), (302, 52920), (315, 50736), (336, 47565), (360, 44394), (378, 42280), (392, 40770), (420, 38052), (432, 36995), (441, 36240), (453, 35280), (490, 32616), (504, 31710), (540, 29596), (560, 28539), (588, 27180), (604, 26460), (630, 25368), (720, 22197), (735, 21744), (755, 21168), (756, 21140), (784, 20385), (840, 19026), (882, 18120), (906, 17640), (945, 16912), (980, 16308), (1008, 15855), (1057, 15120), (1080, 14798), (1176, 13590), (1208, 13230), (1260, 12684), (1323, 12080), (1359, 11760), (1470, 10872), (1510, 10584), (1512, 10570), (1680, 9513), (1764, 9060), (1812, 8820), (1890, 8456), (1960, 8154), (2114, 7560), (2160, 7399), (2205, 7248), (2265, 7056), (2352, 6795), (2416, 6615), (2520, 6342), (2646, 6040), (2718, 5880), (2940, 5436), (3020, 5292), (3024, 5285), (3171, 5040), (3528, 4530), (3624, 4410), (3780, 4228), (3920, 4077)]