1278365085

素因数分解:

$3^4\times 5^1\times {\mathrm{3156457}}^1$

素因数の和:3156474

約数の個数: 20

約数和(自身を含む): 2291588508

約数和(自身を除く): 1013223423

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 3156457, 9469371, 15782285, 28408113, 47346855, 85224339, 142040565, 255673017, 426121695, 1278365085]

約数ペア:

[(1, 1278365085), (3, 426121695), (5, 255673017), (9, 142040565), (15, 85224339), (27, 47346855), (45, 28408113), (81, 15782285), (135, 9469371), (405, 3156457)]