81427216

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{353}}^1\times {\mathrm{1109}}^1$

素因数の和:1483

約数の個数: 40

約数和(自身を含む): 170535960

約数和(自身を除く): 89108744

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 353, 706, 1109, 1412, 2218, 2824, 4436, 4589, 5648, 8872, 9178, 14417, 17744, 18356, 28834, 36712, 57668, 73424, 115336, 230672, 391477, 782954, 1565908, 3131816, 5089201, 6263632, 10178402, 20356804, 40713608, 81427216]

約数ペア:

[(1, 81427216), (2, 40713608), (4, 20356804), (8, 10178402), (13, 6263632), (16, 5089201), (26, 3131816), (52, 1565908), (104, 782954), (208, 391477), (353, 230672), (706, 115336), (1109, 73424), (1412, 57668), (2218, 36712), (2824, 28834), (4436, 18356), (4589, 17744), (5648, 14417), (8872, 9178)]