18875065

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{347}}^1$

素因数の和:429

約数の個数: 32

約数和(自身を含む): 26459136

約数和(自身を除く): 7584071

約数列:

[1, 5, 11, 23, 43, 55, 115, 215, 253, 347, 473, 989, 1265, 1735, 2365, 3817, 4945, 7981, 10879, 14921, 19085, 39905, 54395, 74605, 87791, 164131, 343183, 438955, 820655, 1715915, 3775013, 18875065]

約数ペア:

[(1, 18875065), (5, 3775013), (11, 1715915), (23, 820655), (43, 438955), (55, 343183), (115, 164131), (215, 87791), (253, 74605), (347, 54395), (473, 39905), (989, 19085), (1265, 14921), (1735, 10879), (2365, 7981), (3817, 4945)]