81361256

素因数分解:

$2^3\times {\mathrm{503}}^1\times {\mathrm{20219}}^1$

素因数の和:20728

約数の個数: 16

約数和(自身を含む): 152863200

約数和(自身を除く): 71501944

約数列:

[1, 2, 4, 8, 503, 1006, 2012, 4024, 20219, 40438, 80876, 161752, 10170157, 20340314, 40680628, 81361256]

約数ペア:

[(1, 81361256), (2, 40680628), (4, 20340314), (8, 10170157), (503, 161752), (1006, 80876), (2012, 40438), (4024, 20219)]