21038605

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1861}}^1$

素因数の和:1909

約数の個数: 32

約数和(自身を含む): 32175360

約数和(自身を除く): 11136755

約数列:

[1, 5, 7, 17, 19, 35, 85, 95, 119, 133, 323, 595, 665, 1615, 1861, 2261, 9305, 11305, 13027, 31637, 35359, 65135, 158185, 176795, 221459, 247513, 601103, 1107295, 1237565, 3005515, 4207721, 21038605]

約数ペア:

[(1, 21038605), (5, 4207721), (7, 3005515), (17, 1237565), (19, 1107295), (35, 601103), (85, 247513), (95, 221459), (119, 176795), (133, 158185), (323, 65135), (595, 35359), (665, 31637), (1615, 13027), (1861, 11305), (2261, 9305)]