19951281

素因数分解:

$3^2\times 7^3\times {\mathrm{23}}^1\times {\mathrm{281}}^1$

素因数の和:331

約数の個数: 48

約数和(自身を含む): 35193600

約数和(自身を除く): 15242319

約数列:

[1, 3, 7, 9, 21, 23, 49, 63, 69, 147, 161, 207, 281, 343, 441, 483, 843, 1029, 1127, 1449, 1967, 2529, 3087, 3381, 5901, 6463, 7889, 10143, 13769, 17703, 19389, 23667, 41307, 45241, 58167, 71001, 96383, 123921, 135723, 289149, 316687, 407169, 867447, 950061, 2216809, 2850183, 6650427, 19951281]

約数ペア:

[(1, 19951281), (3, 6650427), (7, 2850183), (9, 2216809), (21, 950061), (23, 867447), (49, 407169), (63, 316687), (69, 289149), (147, 135723), (161, 123921), (207, 96383), (281, 71001), (343, 58167), (441, 45241), (483, 41307), (843, 23667), (1029, 19389), (1127, 17703), (1449, 13769), (1967, 10143), (2529, 7889), (3087, 6463), (3381, 5901)]