21503805940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{283}}^1\times {\mathrm{199961}}^1$

素因数の和:200272

約数の個数: 48

約数和(自身を含む): 47702934720

約数和(自身を除く): 26199128780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 283, 380, 566, 1132, 1415, 2830, 5377, 5660, 10754, 21508, 26885, 53770, 107540, 199961, 399922, 799844, 999805, 1999610, 3799259, 3999220, 7598518, 15197036, 18996295, 37992590, 56588963, 75985180, 113177926, 226355852, 282944815, 565889630, 1075190297, 1131779260, 2150380594, 4300761188, 5375951485, 10751902970, 21503805940]

約数ペア:

[(1, 21503805940), (2, 10751902970), (4, 5375951485), (5, 4300761188), (10, 2150380594), (19, 1131779260), (20, 1075190297), (38, 565889630), (76, 282944815), (95, 226355852), (190, 113177926), (283, 75985180), (380, 56588963), (566, 37992590), (1132, 18996295), (1415, 15197036), (2830, 7598518), (5377, 3999220), (5660, 3799259), (10754, 1999610), (21508, 999805), (26885, 799844), (53770, 399922), (107540, 199961)]