253520449

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{31}}^2\times {\mathrm{223}}^1$

素因数の和:318

約数の個数: 36

約数和(自身を含む): 325640448

約数和(自身を除く): 72119999

約数列:

[1, 7, 13, 31, 91, 169, 217, 223, 403, 961, 1183, 1561, 2821, 2899, 5239, 6727, 6913, 12493, 20293, 36673, 37687, 48391, 87451, 89869, 162409, 214303, 263809, 629083, 1136863, 1168297, 1500121, 2785939, 8178079, 19501573, 36217207, 253520449]

約数ペア:

[(1, 253520449), (7, 36217207), (13, 19501573), (31, 8178079), (91, 2785939), (169, 1500121), (217, 1168297), (223, 1136863), (403, 629083), (961, 263809), (1183, 214303), (1561, 162409), (2821, 89869), (2899, 87451), (5239, 48391), (6727, 37687), (6913, 36673), (12493, 20293)]