20561667

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1777}}^1$

素因数の和:1835

約数の個数: 32

約数和(自身を含む): 34137600

約数和(自身を除く): 13575933

約数列:

[1, 3, 7, 19, 21, 29, 57, 87, 133, 203, 399, 551, 609, 1653, 1777, 3857, 5331, 11571, 12439, 33763, 37317, 51533, 101289, 154599, 236341, 360731, 709023, 979127, 1082193, 2937381, 6853889, 20561667]

約数ペア:

[(1, 20561667), (3, 6853889), (7, 2937381), (19, 1082193), (21, 979127), (29, 709023), (57, 360731), (87, 236341), (133, 154599), (203, 101289), (399, 51533), (551, 37317), (609, 33763), (1653, 12439), (1777, 11571), (3857, 5331)]