80780085

素因数分解:

$3^4\times 5^1\times {\mathrm{199457}}^1$

素因数の和:199474

約数の個数: 20

約数和(自身を含む): 144806508

約数和(自身を除く): 64026423

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 199457, 598371, 997285, 1795113, 2991855, 5385339, 8975565, 16156017, 26926695, 80780085]

約数ペア:

[(1, 80780085), (3, 26926695), (5, 16156017), (9, 8975565), (15, 5385339), (27, 2991855), (45, 1795113), (81, 997285), (135, 598371), (405, 199457)]