209999867

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{283}}^1\times {\mathrm{419}}^1$

素因数の和:743

約数の個数: 32

約数和(自身を含む): 274821120

約数和(自身を除く): 64821253

約数列:

[1, 7, 11, 23, 77, 161, 253, 283, 419, 1771, 1981, 2933, 3113, 4609, 6509, 9637, 21791, 32263, 45563, 67459, 71599, 106007, 118577, 501193, 742049, 830039, 1304347, 2727271, 9130429, 19090897, 29999981, 209999867]

約数ペア:

[(1, 209999867), (7, 29999981), (11, 19090897), (23, 9130429), (77, 2727271), (161, 1304347), (253, 830039), (283, 742049), (419, 501193), (1771, 118577), (1981, 106007), (2933, 71599), (3113, 67459), (4609, 45563), (6509, 32263), (9637, 21791)]