28579985

素因数分解:

$5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:174

約数の個数: 48

約数和(自身を含む): 42550272

約数和(自身を除く): 13970287

約数列:

[1, 5, 7, 31, 35, 49, 53, 71, 155, 217, 245, 265, 355, 371, 497, 1085, 1519, 1643, 1855, 2201, 2485, 2597, 3479, 3763, 7595, 8215, 11005, 11501, 12985, 15407, 17395, 18815, 26341, 57505, 77035, 80507, 107849, 116653, 131705, 184387, 402535, 539245, 583265, 816571, 921935, 4082855, 5715997, 28579985]

約数ペア:

[(1, 28579985), (5, 5715997), (7, 4082855), (31, 921935), (35, 816571), (49, 583265), (53, 539245), (71, 402535), (155, 184387), (217, 131705), (245, 116653), (265, 107849), (355, 80507), (371, 77035), (497, 57505), (1085, 26341), (1519, 18815), (1643, 17395), (1855, 15407), (2201, 12985), (2485, 11501), (2597, 11005), (3479, 8215), (3763, 7595)]