216817155

素因数分解:

$3^4\times 5^1\times {\mathrm{535351}}^1$

素因数の和:535368

約数の個数: 20

約数和(自身を含む): 388665552

約数和(自身を除く): 171848397

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 535351, 1606053, 2676755, 4818159, 8030265, 14454477, 24090795, 43363431, 72272385, 216817155]

約数ペア:

[(1, 216817155), (3, 72272385), (5, 43363431), (9, 24090795), (15, 14454477), (27, 8030265), (45, 4818159), (81, 2676755), (135, 1606053), (405, 535351)]