15980391

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{347}}^1$

素因数の和:420

約数の個数: 48

約数和(自身を含む): 28664064

約数和(自身を除く): 12683673

約数列:

[1, 3, 7, 9, 17, 21, 43, 51, 63, 119, 129, 153, 301, 347, 357, 387, 731, 903, 1041, 1071, 2193, 2429, 2709, 3123, 5117, 5899, 6579, 7287, 14921, 15351, 17697, 21861, 41293, 44763, 46053, 53091, 104447, 123879, 134289, 253657, 313341, 371637, 760971, 940023, 1775599, 2282913, 5326797, 15980391]

約数ペア:

[(1, 15980391), (3, 5326797), (7, 2282913), (9, 1775599), (17, 940023), (21, 760971), (43, 371637), (51, 313341), (63, 253657), (119, 134289), (129, 123879), (153, 104447), (301, 53091), (347, 46053), (357, 44763), (387, 41293), (731, 21861), (903, 17697), (1041, 15351), (1071, 14921), (2193, 7287), (2429, 6579), (2709, 5899), (3123, 5117)]