19265211

素因数分解:

$3^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:216

約数の個数: 48

約数和(自身を含む): 33246720

約数和(自身を除く): 13981509

約数列:

[1, 3, 7, 9, 21, 59, 63, 71, 73, 177, 213, 219, 413, 497, 511, 531, 639, 657, 1239, 1491, 1533, 3717, 4189, 4307, 4473, 4599, 5183, 12567, 12921, 15549, 29323, 30149, 36281, 37701, 38763, 46647, 87969, 90447, 108843, 263907, 271341, 305797, 326529, 917391, 2140579, 2752173, 6421737, 19265211]

約数ペア:

[(1, 19265211), (3, 6421737), (7, 2752173), (9, 2140579), (21, 917391), (59, 326529), (63, 305797), (71, 271341), (73, 263907), (177, 108843), (213, 90447), (219, 87969), (413, 46647), (497, 38763), (511, 37701), (531, 36281), (639, 30149), (657, 29323), (1239, 15549), (1491, 12921), (1533, 12567), (3717, 5183), (4189, 4599), (4307, 4473)]