19538211

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{281}}^1$

素因数の和:352

約数の個数: 48

約数和(自身を含む): 33948288

約数和(自身を除く): 14410077

約数列:

[1, 3, 7, 11, 21, 33, 43, 49, 77, 129, 147, 231, 281, 301, 473, 539, 843, 903, 1419, 1617, 1967, 2107, 3091, 3311, 5901, 6321, 9273, 9933, 12083, 13769, 21637, 23177, 36249, 41307, 64911, 69531, 84581, 132913, 151459, 253743, 398739, 454377, 592067, 930391, 1776201, 2791173, 6512737, 19538211]

約数ペア:

[(1, 19538211), (3, 6512737), (7, 2791173), (11, 1776201), (21, 930391), (33, 592067), (43, 454377), (49, 398739), (77, 253743), (129, 151459), (147, 132913), (231, 84581), (281, 69531), (301, 64911), (473, 41307), (539, 36249), (843, 23177), (903, 21637), (1419, 13769), (1617, 12083), (1967, 9933), (2107, 9273), (3091, 6321), (3311, 5901)]