20807109

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{271}}^1\times {\mathrm{449}}^1$

素因数の和:745

約数の個数: 24

約数和(自身を含む): 31824000

約数和(自身を除く): 11016891

約数列:

[1, 3, 9, 19, 57, 171, 271, 449, 813, 1347, 2439, 4041, 5149, 8531, 15447, 25593, 46341, 76779, 121679, 365037, 1095111, 2311901, 6935703, 20807109]

約数ペア:

[(1, 20807109), (3, 6935703), (9, 2311901), (19, 1095111), (57, 365037), (171, 121679), (271, 76779), (449, 46341), (813, 25593), (1347, 15447), (2439, 8531), (4041, 5149)]