209761245

素因数分解:

$3^5\times 5^1\times {\mathrm{172643}}^1$

素因数の和:172663

約数の個数: 24

約数和(自身を含む): 377054496

約数和(自身を除く): 167293251

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 172643, 517929, 863215, 1553787, 2589645, 4661361, 7768935, 13984083, 23306805, 41952249, 69920415, 209761245]

約数ペア:

[(1, 209761245), (3, 69920415), (5, 41952249), (9, 23306805), (15, 13984083), (27, 7768935), (45, 4661361), (81, 2589645), (135, 1553787), (243, 863215), (405, 517929), (1215, 172643)]