261231685

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{2789}}^1$

素因数の和:2949

約数の個数: 32

約数和(自身を含む): 371226240

約数和(自身を除く): 109994555

約数列:

[1, 5, 11, 13, 55, 65, 131, 143, 655, 715, 1441, 1703, 2789, 7205, 8515, 13945, 18733, 30679, 36257, 93665, 153395, 181285, 365359, 398827, 1826795, 1994135, 4018949, 4749667, 20094745, 23748335, 52246337, 261231685]

約数ペア:

[(1, 261231685), (5, 52246337), (11, 23748335), (13, 20094745), (55, 4749667), (65, 4018949), (131, 1994135), (143, 1826795), (655, 398827), (715, 365359), (1441, 181285), (1703, 153395), (2789, 93665), (7205, 36257), (8515, 30679), (13945, 18733)]