18919675

素因数分解:

$5^2\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:303

約数の個数: 24

約数和(自身を含む): 24306480

約数和(自身を除く): 5386805

約数列:

[1, 5, 25, 53, 109, 131, 265, 545, 655, 1325, 2725, 3275, 5777, 6943, 14279, 28885, 34715, 71395, 144425, 173575, 356975, 756787, 3783935, 18919675]

約数ペア:

[(1, 18919675), (5, 3783935), (25, 756787), (53, 356975), (109, 173575), (131, 144425), (265, 71395), (545, 34715), (655, 28885), (1325, 14279), (2725, 6943), (3275, 5777)]