640326120

素因数分解:

$2^3\times 3^1\times 5^1\times 7^3\times {\mathrm{47}}^1\times {\mathrm{331}}^1$

素因数の和:413

約数の個数: 256

約数和(自身を含む): 2294784000

約数和(自身を除く): 1654457880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 47, 49, 56, 60, 70, 84, 94, 98, 105, 120, 140, 141, 147, 168, 188, 196, 210, 235, 245, 280, 282, 294, 329, 331, 343, 376, 392, 420, 470, 490, 564, 588, 658, 662, 686, 705, 735, 840, 940, 980, 987, 993, 1029, 1128, 1176, 1316, 1324, 1372, 1410, 1470, 1645, 1655, 1715, 1880, 1960, 1974, 1986, 2058, 2303, 2317, 2632, 2648, 2744, 2820, 2940, 3290, 3310, 3430, 3948, 3972, 4116, 4606, 4634, 4935, 4965, 5145, 5640, 5880, 6580, 6620, 6860, 6909, 6951, 7896, 7944, 8232, 9212, 9268, 9870, 9930, 10290, 11515, 11585, 13160, 13240, 13720, 13818, 13902, 15557, 16121, 16219, 18424, 18536, 19740, 19860, 20580, 23030, 23170, 27636, 27804, 31114, 32242, 32438, 34545, 34755, 39480, 39720, 41160, 46060, 46340, 46671, 48363, 48657, 55272, 55608, 62228, 64484, 64876, 69090, 69510, 77785, 80605, 81095, 92120, 92680, 93342, 96726, 97314, 108899, 113533, 124456, 128968, 129752, 138180, 139020, 155570, 161210, 162190, 186684, 193452, 194628, 217798, 227066, 233355, 241815, 243285, 276360, 278040, 311140, 322420, 324380, 326697, 340599, 373368, 386904, 389256, 435596, 454132, 466710, 483630, 486570, 544495, 567665, 622280, 644840, 648760, 653394, 681198, 762293, 871192, 908264, 933420, 967260, 973140, 1088990, 1135330, 1306788, 1362396, 1524586, 1633485, 1702995, 1866840, 1934520, 1946280, 2177980, 2270660, 2286879, 2613576, 2724792, 3049172, 3266970, 3405990, 3811465, 4355960, 4541320, 4573758, 5336051, 6098344, 6533940, 6811980, 7622930, 9147516, 10672102, 11434395, 13067880, 13623960, 15245860, 16008153, 18295032, 21344204, 22868790, 26680255, 30491720, 32016306, 42688408, 45737580, 53360510, 64032612, 80040765, 91475160, 106721020, 128065224, 160081530, 213442040, 320163060, 640326120]

約数ペア:

[(1, 640326120), (2, 320163060), (3, 213442040), (4, 160081530), (5, 128065224), (6, 106721020), (7, 91475160), (8, 80040765), (10, 64032612), (12, 53360510), (14, 45737580), (15, 42688408), (20, 32016306), (21, 30491720), (24, 26680255), (28, 22868790), (30, 21344204), (35, 18295032), (40, 16008153), (42, 15245860), (47, 13623960), (49, 13067880), (56, 11434395), (60, 10672102), (70, 9147516), (84, 7622930), (94, 6811980), (98, 6533940), (105, 6098344), (120, 5336051), (140, 4573758), (141, 4541320), (147, 4355960), (168, 3811465), (188, 3405990), (196, 3266970), (210, 3049172), (235, 2724792), (245, 2613576), (280, 2286879), (282, 2270660), (294, 2177980), (329, 1946280), (331, 1934520), (343, 1866840), (376, 1702995), (392, 1633485), (420, 1524586), (470, 1362396), (490, 1306788), (564, 1135330), (588, 1088990), (658, 973140), (662, 967260), (686, 933420), (705, 908264), (735, 871192), (840, 762293), (940, 681198), (980, 653394), (987, 648760), (993, 644840), (1029, 622280), (1128, 567665), (1176, 544495), (1316, 486570), (1324, 483630), (1372, 466710), (1410, 454132), (1470, 435596), (1645, 389256), (1655, 386904), (1715, 373368), (1880, 340599), (1960, 326697), (1974, 324380), (1986, 322420), (2058, 311140), (2303, 278040), (2317, 276360), (2632, 243285), (2648, 241815), (2744, 233355), (2820, 227066), (2940, 217798), (3290, 194628), (3310, 193452), (3430, 186684), (3948, 162190), (3972, 161210), (4116, 155570), (4606, 139020), (4634, 138180), (4935, 129752), (4965, 128968), (5145, 124456), (5640, 113533), (5880, 108899), (6580, 97314), (6620, 96726), (6860, 93342), (6909, 92680), (6951, 92120), (7896, 81095), (7944, 80605), (8232, 77785), (9212, 69510), (9268, 69090), (9870, 64876), (9930, 64484), (10290, 62228), (11515, 55608), (11585, 55272), (13160, 48657), (13240, 48363), (13720, 46671), (13818, 46340), (13902, 46060), (15557, 41160), (16121, 39720), (16219, 39480), (18424, 34755), (18536, 34545), (19740, 32438), (19860, 32242), (20580, 31114), (23030, 27804), (23170, 27636)]