19278133

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{491}}^1$

素因数の和:648

約数の個数: 16

約数和(自身を含む): 22671360

約数和(自身を除く): 3393227

約数列:

[1, 7, 71, 79, 491, 497, 553, 3437, 5609, 34861, 38789, 39263, 244027, 271523, 2754019, 19278133]

約数ペア:

[(1, 19278133), (7, 2754019), (71, 271523), (79, 244027), (491, 39263), (497, 38789), (553, 34861), (3437, 5609)]