138723760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:243

約数の個数: 160

約数和(自身を含む): 389689344

約数和(自身を除く): 250965584

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 56, 61, 62, 70, 80, 112, 122, 124, 131, 140, 155, 217, 244, 248, 262, 280, 305, 310, 427, 434, 488, 496, 524, 560, 610, 620, 655, 854, 868, 917, 976, 1048, 1085, 1220, 1240, 1310, 1708, 1736, 1834, 1891, 2096, 2135, 2170, 2440, 2480, 2620, 3416, 3472, 3668, 3782, 4061, 4270, 4340, 4585, 4880, 5240, 6832, 7336, 7564, 7991, 8122, 8540, 8680, 9170, 9455, 10480, 13237, 14672, 15128, 15982, 16244, 17080, 17360, 18340, 18910, 20305, 26474, 28427, 30256, 31964, 32488, 34160, 36680, 37820, 39955, 40610, 52948, 55937, 56854, 63928, 64976, 66185, 73360, 75640, 79910, 81220, 105896, 111874, 113708, 127856, 132370, 142135, 151280, 159820, 162440, 211792, 223748, 227416, 247721, 264740, 279685, 284270, 319640, 324880, 447496, 454832, 495442, 529480, 559370, 568540, 639280, 894992, 990884, 1058960, 1118740, 1137080, 1238605, 1734047, 1981768, 2237480, 2274160, 2477210, 3468094, 3963536, 4474960, 4954420, 6936188, 8670235, 9908840, 13872376, 17340470, 19817680, 27744752, 34680940, 69361880, 138723760]

約数ペア:

[(1, 138723760), (2, 69361880), (4, 34680940), (5, 27744752), (7, 19817680), (8, 17340470), (10, 13872376), (14, 9908840), (16, 8670235), (20, 6936188), (28, 4954420), (31, 4474960), (35, 3963536), (40, 3468094), (56, 2477210), (61, 2274160), (62, 2237480), (70, 1981768), (80, 1734047), (112, 1238605), (122, 1137080), (124, 1118740), (131, 1058960), (140, 990884), (155, 894992), (217, 639280), (244, 568540), (248, 559370), (262, 529480), (280, 495442), (305, 454832), (310, 447496), (427, 324880), (434, 319640), (488, 284270), (496, 279685), (524, 264740), (560, 247721), (610, 227416), (620, 223748), (655, 211792), (854, 162440), (868, 159820), (917, 151280), (976, 142135), (1048, 132370), (1085, 127856), (1220, 113708), (1240, 111874), (1310, 105896), (1708, 81220), (1736, 79910), (1834, 75640), (1891, 73360), (2096, 66185), (2135, 64976), (2170, 63928), (2440, 56854), (2480, 55937), (2620, 52948), (3416, 40610), (3472, 39955), (3668, 37820), (3782, 36680), (4061, 34160), (4270, 32488), (4340, 31964), (4585, 30256), (4880, 28427), (5240, 26474), (6832, 20305), (7336, 18910), (7564, 18340), (7991, 17360), (8122, 17080), (8540, 16244), (8680, 15982), (9170, 15128), (9455, 14672), (10480, 13237)]