280487956

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{691}}^1$

素因数の和:837

約数の個数: 72

約数和(自身を含む): 607437600

約数和(自身を除く): 326949644

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 49, 76, 98, 109, 133, 196, 218, 266, 436, 532, 691, 763, 931, 1382, 1526, 1862, 2071, 2764, 3052, 3724, 4142, 4837, 5341, 8284, 9674, 10682, 13129, 14497, 19348, 21364, 26258, 28994, 33859, 52516, 57988, 67718, 75319, 91903, 101479, 135436, 150638, 183806, 202958, 301276, 367612, 405916, 527233, 643321, 1054466, 1286642, 1431061, 2108932, 2573284, 2862122, 3690631, 5724244, 7381262, 10017427, 14762524, 20034854, 40069708, 70121989, 140243978, 280487956]

約数ペア:

[(1, 280487956), (2, 140243978), (4, 70121989), (7, 40069708), (14, 20034854), (19, 14762524), (28, 10017427), (38, 7381262), (49, 5724244), (76, 3690631), (98, 2862122), (109, 2573284), (133, 2108932), (196, 1431061), (218, 1286642), (266, 1054466), (436, 643321), (532, 527233), (691, 405916), (763, 367612), (931, 301276), (1382, 202958), (1526, 183806), (1862, 150638), (2071, 135436), (2764, 101479), (3052, 91903), (3724, 75319), (4142, 67718), (4837, 57988), (5341, 52516), (8284, 33859), (9674, 28994), (10682, 26258), (13129, 21364), (14497, 19348)]