209525560

素因数分解:

$2^3\times 5^1\times {\mathrm{5238139}}^1$

素因数の和:5238150

約数の個数: 16

約数和(自身を含む): 471432600

約数和(自身を除く): 261907040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5238139, 10476278, 20952556, 26190695, 41905112, 52381390, 104762780, 209525560]

約数ペア:

[(1, 209525560), (2, 104762780), (4, 52381390), (5, 41905112), (8, 26190695), (10, 20952556), (20, 10476278), (40, 5238139)]