212205

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:105

約数の個数: 32

約数和(自身を含む): 405504

約数和(自身を除く): 193299

約数列:

[1, 3, 5, 7, 15, 21, 35, 43, 47, 105, 129, 141, 215, 235, 301, 329, 645, 705, 903, 987, 1505, 1645, 2021, 4515, 4935, 6063, 10105, 14147, 30315, 42441, 70735, 212205]

約数ペア:

[(1, 212205), (3, 70735), (5, 42441), (7, 30315), (15, 14147), (21, 10105), (35, 6063), (43, 4935), (47, 4515), (105, 2021), (129, 1645), (141, 1505), (215, 987), (235, 903), (301, 705), (329, 645)]