128908920

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{197}}^1$

素因数の和:278

約数の個数: 256

約数和(自身を含む): 479001600

約数和(自身を除く): 350092680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 19, 20, 21, 24, 28, 30, 35, 38, 40, 41, 42, 56, 57, 60, 70, 76, 82, 84, 95, 105, 114, 120, 123, 133, 140, 152, 164, 168, 190, 197, 205, 210, 228, 246, 266, 280, 285, 287, 328, 380, 394, 399, 410, 420, 456, 492, 532, 570, 574, 591, 615, 665, 760, 779, 788, 798, 820, 840, 861, 984, 985, 1064, 1140, 1148, 1182, 1230, 1330, 1379, 1435, 1558, 1576, 1596, 1640, 1722, 1970, 1995, 2280, 2296, 2337, 2364, 2460, 2660, 2758, 2870, 2955, 3116, 3192, 3444, 3743, 3895, 3940, 3990, 4137, 4305, 4674, 4728, 4920, 5320, 5453, 5516, 5740, 5910, 6232, 6888, 6895, 7486, 7790, 7880, 7980, 8077, 8274, 8610, 9348, 10906, 11032, 11229, 11480, 11685, 11820, 13790, 14972, 15580, 15960, 16154, 16359, 16548, 17220, 18696, 18715, 20685, 21812, 22458, 23370, 23640, 24231, 26201, 27265, 27580, 29944, 31160, 32308, 32718, 33096, 34440, 37430, 40385, 41370, 43624, 44916, 46740, 48462, 52402, 54530, 55160, 56145, 56539, 64616, 65436, 74860, 78603, 80770, 81795, 82740, 89832, 93480, 96924, 104804, 109060, 112290, 113078, 121155, 130872, 131005, 149720, 153463, 157206, 161540, 163590, 165480, 169617, 193848, 209608, 218120, 224580, 226156, 242310, 262010, 282695, 306926, 314412, 323080, 327180, 339234, 393015, 449160, 452312, 460389, 484620, 524020, 565390, 613852, 628824, 654360, 678468, 767315, 786030, 848085, 920778, 969240, 1048040, 1074241, 1130780, 1227704, 1356936, 1534630, 1572060, 1696170, 1841556, 2148482, 2261560, 2301945, 3069260, 3144120, 3222723, 3392340, 3683112, 4296964, 4603890, 5371205, 6138520, 6445446, 6784680, 8593928, 9207780, 10742410, 12890892, 16113615, 18415560, 21484820, 25781784, 32227230, 42969640, 64454460, 128908920]

約数ペア:

[(1, 128908920), (2, 64454460), (3, 42969640), (4, 32227230), (5, 25781784), (6, 21484820), (7, 18415560), (8, 16113615), (10, 12890892), (12, 10742410), (14, 9207780), (15, 8593928), (19, 6784680), (20, 6445446), (21, 6138520), (24, 5371205), (28, 4603890), (30, 4296964), (35, 3683112), (38, 3392340), (40, 3222723), (41, 3144120), (42, 3069260), (56, 2301945), (57, 2261560), (60, 2148482), (70, 1841556), (76, 1696170), (82, 1572060), (84, 1534630), (95, 1356936), (105, 1227704), (114, 1130780), (120, 1074241), (123, 1048040), (133, 969240), (140, 920778), (152, 848085), (164, 786030), (168, 767315), (190, 678468), (197, 654360), (205, 628824), (210, 613852), (228, 565390), (246, 524020), (266, 484620), (280, 460389), (285, 452312), (287, 449160), (328, 393015), (380, 339234), (394, 327180), (399, 323080), (410, 314412), (420, 306926), (456, 282695), (492, 262010), (532, 242310), (570, 226156), (574, 224580), (591, 218120), (615, 209608), (665, 193848), (760, 169617), (779, 165480), (788, 163590), (798, 161540), (820, 157206), (840, 153463), (861, 149720), (984, 131005), (985, 130872), (1064, 121155), (1140, 113078), (1148, 112290), (1182, 109060), (1230, 104804), (1330, 96924), (1379, 93480), (1435, 89832), (1558, 82740), (1576, 81795), (1596, 80770), (1640, 78603), (1722, 74860), (1970, 65436), (1995, 64616), (2280, 56539), (2296, 56145), (2337, 55160), (2364, 54530), (2460, 52402), (2660, 48462), (2758, 46740), (2870, 44916), (2955, 43624), (3116, 41370), (3192, 40385), (3444, 37430), (3743, 34440), (3895, 33096), (3940, 32718), (3990, 32308), (4137, 31160), (4305, 29944), (4674, 27580), (4728, 27265), (4920, 26201), (5320, 24231), (5453, 23640), (5516, 23370), (5740, 22458), (5910, 21812), (6232, 20685), (6888, 18715), (6895, 18696), (7486, 17220), (7790, 16548), (7880, 16359), (7980, 16154), (8077, 15960), (8274, 15580), (8610, 14972), (9348, 13790), (10906, 11820), (11032, 11685), (11229, 11480)]