17878225

素因数分解:

$5^2\times {\mathrm{53}}^1\times {\mathrm{103}}^1\times {\mathrm{131}}^1$

素因数の和:297

約数の個数: 24

約数和(自身を含む): 22980672

約数和(自身を除く): 5102447

約数列:

[1, 5, 25, 53, 103, 131, 265, 515, 655, 1325, 2575, 3275, 5459, 6943, 13493, 27295, 34715, 67465, 136475, 173575, 337325, 715129, 3575645, 17878225]

約数ペア:

[(1, 17878225), (5, 3575645), (25, 715129), (53, 337325), (103, 173575), (131, 136475), (265, 67465), (515, 34715), (655, 27295), (1325, 13493), (2575, 6943), (3275, 5459)]