208077909

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{1999}}^1$

素因数の和:2189

約数の個数: 32

約数和(自身を含む): 318528000

約数和(自身を除く): 110450091

約数列:

[1, 3, 13, 17, 39, 51, 157, 221, 471, 663, 1999, 2041, 2669, 5997, 6123, 8007, 25987, 33983, 34697, 77961, 101949, 104091, 313843, 441779, 941529, 1325337, 4079959, 5335331, 12239877, 16005993, 69359303, 208077909]

約数ペア:

[(1, 208077909), (3, 69359303), (13, 16005993), (17, 12239877), (39, 5335331), (51, 4079959), (157, 1325337), (221, 941529), (471, 441779), (663, 313843), (1999, 104091), (2041, 101949), (2669, 77961), (5997, 34697), (6123, 33983), (8007, 25987)]