81220905

素因数分解:

$3^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{10433}}^1$

素因数の和:10617

約数の個数: 24

約数和(自身を含む): 141610248

約数和(自身を除く): 60389343

約数列:

[1, 3, 5, 9, 15, 45, 173, 519, 865, 1557, 2595, 7785, 10433, 31299, 52165, 93897, 156495, 469485, 1804909, 5414727, 9024545, 16244181, 27073635, 81220905]

約数ペア:

[(1, 81220905), (3, 27073635), (5, 16244181), (9, 9024545), (15, 5414727), (45, 1804909), (173, 469485), (519, 156495), (865, 93897), (1557, 52165), (2595, 31299), (7785, 10433)]