81172755

素因数分解:

$3^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{103}}^1\times {\mathrm{211}}^1$

素因数の和:408

約数の個数: 48

約数和(自身を含む): 144458496

約数和(自身を除く): 63285741

約数列:

[1, 3, 5, 9, 15, 45, 83, 103, 211, 249, 309, 415, 515, 633, 747, 927, 1055, 1245, 1545, 1899, 3165, 3735, 4635, 8549, 9495, 17513, 21733, 25647, 42745, 52539, 65199, 76941, 87565, 108665, 128235, 157617, 195597, 262695, 325995, 384705, 788085, 977985, 1803839, 5411517, 9019195, 16234551, 27057585, 81172755]

約数ペア:

[(1, 81172755), (3, 27057585), (5, 16234551), (9, 9019195), (15, 5411517), (45, 1803839), (83, 977985), (103, 788085), (211, 384705), (249, 325995), (309, 262695), (415, 195597), (515, 157617), (633, 128235), (747, 108665), (927, 87565), (1055, 76941), (1245, 65199), (1545, 52539), (1899, 42745), (3165, 25647), (3735, 21733), (4635, 17513), (8549, 9495)]