640757712

素因数分解:

$2^4\times 3^1\times 7^2\times {\mathrm{37}}^2\times {\mathrm{199}}^1$

素因数の和:298

約数の個数: 180

約数和(自身を含む): 1988935200

約数和(自身を除く): 1348177488

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 37, 42, 48, 49, 56, 74, 84, 98, 111, 112, 147, 148, 168, 196, 199, 222, 259, 294, 296, 336, 392, 398, 444, 518, 588, 592, 597, 777, 784, 796, 888, 1036, 1176, 1194, 1369, 1393, 1554, 1592, 1776, 1813, 2072, 2352, 2388, 2738, 2786, 3108, 3184, 3626, 4107, 4144, 4179, 4776, 5439, 5476, 5572, 6216, 7252, 7363, 8214, 8358, 9552, 9583, 9751, 10878, 10952, 11144, 12432, 14504, 14726, 16428, 16716, 19166, 19502, 21756, 21904, 22089, 22288, 28749, 29008, 29253, 29452, 32856, 33432, 38332, 39004, 43512, 44178, 51541, 57498, 58506, 58904, 65712, 66864, 67081, 76664, 78008, 87024, 88356, 103082, 114996, 117012, 117808, 134162, 153328, 154623, 156016, 176712, 201243, 206164, 229992, 234024, 268324, 272431, 309246, 353424, 360787, 402486, 412328, 459984, 468048, 536648, 544862, 618492, 721574, 804972, 817293, 824656, 1073296, 1082361, 1089724, 1236984, 1443148, 1609944, 1634586, 1907017, 2164722, 2179448, 2473968, 2886296, 3219888, 3269172, 3814034, 4329444, 4358896, 5721051, 5772592, 6538344, 7628068, 8658888, 11442102, 13076688, 13349119, 15256136, 17317776, 22884204, 26698238, 30512272, 40047357, 45768408, 53396476, 80094714, 91536816, 106792952, 160189428, 213585904, 320378856, 640757712]

約数ペア:

[(1, 640757712), (2, 320378856), (3, 213585904), (4, 160189428), (6, 106792952), (7, 91536816), (8, 80094714), (12, 53396476), (14, 45768408), (16, 40047357), (21, 30512272), (24, 26698238), (28, 22884204), (37, 17317776), (42, 15256136), (48, 13349119), (49, 13076688), (56, 11442102), (74, 8658888), (84, 7628068), (98, 6538344), (111, 5772592), (112, 5721051), (147, 4358896), (148, 4329444), (168, 3814034), (196, 3269172), (199, 3219888), (222, 2886296), (259, 2473968), (294, 2179448), (296, 2164722), (336, 1907017), (392, 1634586), (398, 1609944), (444, 1443148), (518, 1236984), (588, 1089724), (592, 1082361), (597, 1073296), (777, 824656), (784, 817293), (796, 804972), (888, 721574), (1036, 618492), (1176, 544862), (1194, 536648), (1369, 468048), (1393, 459984), (1554, 412328), (1592, 402486), (1776, 360787), (1813, 353424), (2072, 309246), (2352, 272431), (2388, 268324), (2738, 234024), (2786, 229992), (3108, 206164), (3184, 201243), (3626, 176712), (4107, 156016), (4144, 154623), (4179, 153328), (4776, 134162), (5439, 117808), (5476, 117012), (5572, 114996), (6216, 103082), (7252, 88356), (7363, 87024), (8214, 78008), (8358, 76664), (9552, 67081), (9583, 66864), (9751, 65712), (10878, 58904), (10952, 58506), (11144, 57498), (12432, 51541), (14504, 44178), (14726, 43512), (16428, 39004), (16716, 38332), (19166, 33432), (19502, 32856), (21756, 29452), (21904, 29253), (22089, 29008), (22288, 28749)]