215565705

素因数分解:

$3^4\times 5^1\times {\mathrm{532261}}^1$

素因数の和:532278

約数の個数: 20

約数和(自身を含む): 386422212

約数和(自身を除く): 170856507

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 532261, 1596783, 2661305, 4790349, 7983915, 14371047, 23951745, 43113141, 71855235, 215565705]

約数ペア:

[(1, 215565705), (3, 71855235), (5, 43113141), (9, 23951745), (15, 14371047), (27, 7983915), (45, 4790349), (81, 2661305), (135, 1596783), (405, 532261)]