21664845

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{25339}}^1$

素因数の和:25369

約数の個数: 24

約数和(自身を含む): 39530400

約数和(自身を除く): 17865555

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855, 25339, 76017, 126695, 228051, 380085, 481441, 1140255, 1444323, 2407205, 4332969, 7221615, 21664845]

約数ペア:

[(1, 21664845), (3, 7221615), (5, 4332969), (9, 2407205), (15, 1444323), (19, 1140255), (45, 481441), (57, 380085), (95, 228051), (171, 126695), (285, 76017), (855, 25339)]