138402040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{21491}}^1$

素因数の和:21532

約数の個数: 64

約数和(自身を含む): 371381760

約数和(自身を除く): 232979720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 460, 644, 805, 920, 1288, 1610, 3220, 6440, 21491, 42982, 85964, 107455, 150437, 171928, 214910, 300874, 429820, 494293, 601748, 752185, 859640, 988586, 1203496, 1504370, 1977172, 2471465, 3008740, 3460051, 3954344, 4942930, 6017480, 6920102, 9885860, 13840204, 17300255, 19771720, 27680408, 34600510, 69201020, 138402040]

約数ペア:

[(1, 138402040), (2, 69201020), (4, 34600510), (5, 27680408), (7, 19771720), (8, 17300255), (10, 13840204), (14, 9885860), (20, 6920102), (23, 6017480), (28, 4942930), (35, 3954344), (40, 3460051), (46, 3008740), (56, 2471465), (70, 1977172), (92, 1504370), (115, 1203496), (140, 988586), (161, 859640), (184, 752185), (230, 601748), (280, 494293), (322, 429820), (460, 300874), (644, 214910), (805, 171928), (920, 150437), (1288, 107455), (1610, 85964), (3220, 42982), (6440, 21491)]