20774585

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{107}}^1$

素因数の和:257

約数の個数: 32

約数和(自身を含む): 28304640

約数和(自身を除く): 7530055

約数列:

[1, 5, 13, 29, 65, 103, 107, 145, 377, 515, 535, 1339, 1391, 1885, 2987, 3103, 6695, 6955, 11021, 14935, 15515, 38831, 40339, 55105, 143273, 194155, 201695, 319609, 716365, 1598045, 4154917, 20774585]

約数ペア:

[(1, 20774585), (5, 4154917), (13, 1598045), (29, 716365), (65, 319609), (103, 201695), (107, 194155), (145, 143273), (377, 55105), (515, 40339), (535, 38831), (1339, 15515), (1391, 14935), (1885, 11021), (2987, 6955), (3103, 6695)]