261583735

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{12689}}^1$

素因数の和:12751

約数の個数: 32

約数和(自身を含む): 389836800

約数和(自身を除く): 128253065

約数列:

[1, 5, 7, 19, 31, 35, 95, 133, 155, 217, 589, 665, 1085, 2945, 4123, 12689, 20615, 63445, 88823, 241091, 393359, 444115, 1205455, 1687637, 1966795, 2753513, 7473821, 8438185, 13767565, 37369105, 52316747, 261583735]

約数ペア:

[(1, 261583735), (5, 52316747), (7, 37369105), (19, 13767565), (31, 8438185), (35, 7473821), (95, 2753513), (133, 1966795), (155, 1687637), (217, 1205455), (589, 444115), (665, 393359), (1085, 241091), (2945, 88823), (4123, 63445), (12689, 20615)]