20811825

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{5441}}^1$

素因数の和:5474

約数の個数: 36

約数和(自身を含む): 39476268

約数和(自身を除く): 18664443

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 85, 153, 225, 255, 425, 765, 1275, 3825, 5441, 16323, 27205, 48969, 81615, 92497, 136025, 244845, 277491, 408075, 462485, 832473, 1224225, 1387455, 2312425, 4162365, 6937275, 20811825]

約数ペア:

[(1, 20811825), (3, 6937275), (5, 4162365), (9, 2312425), (15, 1387455), (17, 1224225), (25, 832473), (45, 462485), (51, 408075), (75, 277491), (85, 244845), (153, 136025), (225, 92497), (255, 81615), (425, 48969), (765, 27205), (1275, 16323), (3825, 5441)]