19996450

素因数分解:

$2^1\times 5^2\times {\mathrm{439}}^1\times {\mathrm{911}}^1$

素因数の和:1362

約数の個数: 24

約数和(自身を含む): 37319040

約数和(自身を除く): 17322590

約数列:

[1, 2, 5, 10, 25, 50, 439, 878, 911, 1822, 2195, 4390, 4555, 9110, 10975, 21950, 22775, 45550, 399929, 799858, 1999645, 3999290, 9998225, 19996450]

約数ペア:

[(1, 19996450), (2, 9998225), (5, 3999290), (10, 1999645), (25, 799858), (50, 399929), (439, 45550), (878, 22775), (911, 21950), (1822, 10975), (2195, 9110), (4390, 4555)]