243405

素因数分解:

$3^4\times 5^1\times {\mathrm{601}}^1$

素因数の和:618

約数の個数: 20

約数和(自身を含む): 437052

約数和(自身を除く): 193647

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 601, 1803, 3005, 5409, 9015, 16227, 27045, 48681, 81135, 243405]

約数ペア:

[(1, 243405), (3, 81135), (5, 48681), (9, 27045), (15, 16227), (27, 9015), (45, 5409), (81, 3005), (135, 1803), (405, 601)]