12821180

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{9029}}^1$

素因数の和:9109

約数の個数: 24

約数和(自身を含む): 27306720

約数和(自身を除く): 14485540

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 9029, 18058, 36116, 45145, 90290, 180580, 641059, 1282118, 2564236, 3205295, 6410590, 12821180]

約数ペア:

[(1, 12821180), (2, 6410590), (4, 3205295), (5, 2564236), (10, 1282118), (20, 641059), (71, 180580), (142, 90290), (284, 45145), (355, 36116), (710, 18058), (1420, 9029)]