251435455

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{641}}^1\times {\mathrm{4129}}^1$

素因数の和:4794

約数の個数: 16

約数和(自身を含む): 318175200

約数和(自身を除く): 66739745

約数列:

[1, 5, 19, 95, 641, 3205, 4129, 12179, 20645, 60895, 78451, 392255, 2646689, 13233445, 50287091, 251435455]

約数ペア:

[(1, 251435455), (5, 50287091), (19, 13233445), (95, 2646689), (641, 392255), (3205, 78451), (4129, 60895), (12179, 20645)]