18519974

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{17911}}^1$

素因数の和:17971

約数の個数: 16

約数和(自身を含む): 30951936

約数和(自身を除く): 12431962

約数列:

[1, 2, 11, 22, 47, 94, 517, 1034, 17911, 35822, 197021, 394042, 841817, 1683634, 9259987, 18519974]

約数ペア:

[(1, 18519974), (2, 9259987), (11, 1683634), (22, 841817), (47, 394042), (94, 197021), (517, 35822), (1034, 17911)]