217427085

素因数分解:

$3^4\times 5^1\times {\mathrm{536857}}^1$

素因数の和:536874

約数の個数: 20

約数和(自身を含む): 389758908

約数和(自身を除く): 172331823

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 536857, 1610571, 2684285, 4831713, 8052855, 14495139, 24158565, 43485417, 72475695, 217427085]

約数ペア:

[(1, 217427085), (3, 72475695), (5, 43485417), (9, 24158565), (15, 14495139), (27, 8052855), (45, 4831713), (81, 2684285), (135, 1610571), (405, 536857)]