19217320

素因数分解:

$2^3\times 5^1\times {\mathrm{353}}^1\times {\mathrm{1361}}^1$

素因数の和:1725

約数の個数: 32

約数和(自身を含む): 43393320

約数和(自身を除く): 24176000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 353, 706, 1361, 1412, 1765, 2722, 2824, 3530, 5444, 6805, 7060, 10888, 13610, 14120, 27220, 54440, 480433, 960866, 1921732, 2402165, 3843464, 4804330, 9608660, 19217320]

約数ペア:

[(1, 19217320), (2, 9608660), (4, 4804330), (5, 3843464), (8, 2402165), (10, 1921732), (20, 960866), (40, 480433), (353, 54440), (706, 27220), (1361, 14120), (1412, 13610), (1765, 10888), (2722, 7060), (2824, 6805), (3530, 5444)]