20867211

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{4703}}^1$

素因数の和:4755

約数の個数: 24

約数和(自身を含む): 33022080

約数和(自身を除く): 12154869

約数列:

[1, 3, 9, 17, 29, 51, 87, 153, 261, 493, 1479, 4437, 4703, 14109, 42327, 79951, 136387, 239853, 409161, 719559, 1227483, 2318579, 6955737, 20867211]

約数ペア:

[(1, 20867211), (3, 6955737), (9, 2318579), (17, 1227483), (29, 719559), (51, 409161), (87, 239853), (153, 136387), (261, 79951), (493, 42327), (1479, 14109), (4437, 4703)]