18890757

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:178

約数の個数: 48

約数和(自身を含む): 30730752

約数和(自身を除く): 11839995

約数列:

[1, 3, 9, 17, 37, 47, 51, 71, 111, 141, 153, 213, 333, 423, 629, 639, 799, 1207, 1739, 1887, 2397, 2627, 3337, 3621, 5217, 5661, 7191, 7881, 10011, 10863, 15651, 23643, 29563, 30033, 44659, 56729, 88689, 123469, 133977, 170187, 266067, 370407, 401931, 510561, 1111221, 2098973, 6296919, 18890757]

約数ペア:

[(1, 18890757), (3, 6296919), (9, 2098973), (17, 1111221), (37, 510561), (47, 401931), (51, 370407), (71, 266067), (111, 170187), (141, 133977), (153, 123469), (213, 88689), (333, 56729), (423, 44659), (629, 30033), (639, 29563), (799, 23643), (1207, 15651), (1739, 10863), (1887, 10011), (2397, 7881), (2627, 7191), (3337, 5661), (3621, 5217)]