18704919

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{2503}}^1$

素因数の和:2606

約数の個数: 16

約数和(自身を含む): 25961472

約数和(自身を除く): 7256553

約数列:

[1, 3, 47, 53, 141, 159, 2491, 2503, 7473, 7509, 117641, 132659, 352923, 397977, 6234973, 18704919]

約数ペア:

[(1, 18704919), (3, 6234973), (47, 397977), (53, 352923), (141, 132659), (159, 117641), (2491, 7509), (2503, 7473)]