128971920

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{997}}^1$

素因数の和:1038

約数の個数: 240

約数和(自身を含む): 507878208

約数和(自身を除く): 378906288

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 16, 20, 21, 22, 24, 28, 30, 33, 35, 40, 42, 44, 48, 49, 55, 56, 60, 66, 70, 77, 80, 84, 88, 98, 105, 110, 112, 120, 132, 140, 147, 154, 165, 168, 176, 196, 210, 220, 231, 240, 245, 264, 280, 294, 308, 330, 336, 385, 392, 420, 440, 462, 490, 528, 539, 560, 588, 616, 660, 735, 770, 784, 840, 880, 924, 980, 997, 1078, 1155, 1176, 1232, 1320, 1470, 1540, 1617, 1680, 1848, 1960, 1994, 2156, 2310, 2352, 2640, 2695, 2940, 2991, 3080, 3234, 3696, 3920, 3988, 4312, 4620, 4985, 5390, 5880, 5982, 6160, 6468, 6979, 7976, 8085, 8624, 9240, 9970, 10780, 10967, 11760, 11964, 12936, 13958, 14955, 15952, 16170, 18480, 19940, 20937, 21560, 21934, 23928, 25872, 27916, 29910, 32340, 32901, 34895, 39880, 41874, 43120, 43868, 47856, 48853, 54835, 55832, 59820, 64680, 65802, 69790, 76769, 79760, 83748, 87736, 97706, 104685, 109670, 111664, 119640, 129360, 131604, 139580, 146559, 153538, 164505, 167496, 175472, 195412, 209370, 219340, 230307, 239280, 244265, 263208, 279160, 293118, 307076, 329010, 334992, 383845, 390824, 418740, 438680, 460614, 488530, 526416, 537383, 558320, 586236, 614152, 658020, 732795, 767690, 781648, 837480, 877360, 921228, 977060, 1074766, 1151535, 1172472, 1228304, 1316040, 1465590, 1535380, 1612149, 1674960, 1842456, 1954120, 2149532, 2303070, 2344944, 2632080, 2686915, 2931180, 3070760, 3224298, 3684912, 3908240, 4299064, 4606140, 5373830, 5862360, 6141520, 6448596, 8060745, 8598128, 9212280, 10747660, 11724720, 12897192, 16121490, 18424560, 21495320, 25794384, 32242980, 42990640, 64485960, 128971920]

約数ペア:

[(1, 128971920), (2, 64485960), (3, 42990640), (4, 32242980), (5, 25794384), (6, 21495320), (7, 18424560), (8, 16121490), (10, 12897192), (11, 11724720), (12, 10747660), (14, 9212280), (15, 8598128), (16, 8060745), (20, 6448596), (21, 6141520), (22, 5862360), (24, 5373830), (28, 4606140), (30, 4299064), (33, 3908240), (35, 3684912), (40, 3224298), (42, 3070760), (44, 2931180), (48, 2686915), (49, 2632080), (55, 2344944), (56, 2303070), (60, 2149532), (66, 1954120), (70, 1842456), (77, 1674960), (80, 1612149), (84, 1535380), (88, 1465590), (98, 1316040), (105, 1228304), (110, 1172472), (112, 1151535), (120, 1074766), (132, 977060), (140, 921228), (147, 877360), (154, 837480), (165, 781648), (168, 767690), (176, 732795), (196, 658020), (210, 614152), (220, 586236), (231, 558320), (240, 537383), (245, 526416), (264, 488530), (280, 460614), (294, 438680), (308, 418740), (330, 390824), (336, 383845), (385, 334992), (392, 329010), (420, 307076), (440, 293118), (462, 279160), (490, 263208), (528, 244265), (539, 239280), (560, 230307), (588, 219340), (616, 209370), (660, 195412), (735, 175472), (770, 167496), (784, 164505), (840, 153538), (880, 146559), (924, 139580), (980, 131604), (997, 129360), (1078, 119640), (1155, 111664), (1176, 109670), (1232, 104685), (1320, 97706), (1470, 87736), (1540, 83748), (1617, 79760), (1680, 76769), (1848, 69790), (1960, 65802), (1994, 64680), (2156, 59820), (2310, 55832), (2352, 54835), (2640, 48853), (2695, 47856), (2940, 43868), (2991, 43120), (3080, 41874), (3234, 39880), (3696, 34895), (3920, 32901), (3988, 32340), (4312, 29910), (4620, 27916), (4985, 25872), (5390, 23928), (5880, 21934), (5982, 21560), (6160, 20937), (6468, 19940), (6979, 18480), (7976, 16170), (8085, 15952), (8624, 14955), (9240, 13958), (9970, 12936), (10780, 11964), (10967, 11760)]