20884059

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{239}}^1$

素因数の和:344

約数の個数: 48

約数和(自身を含む): 36940800

約数和(自身を除く): 16056741

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 73, 133, 171, 219, 239, 399, 511, 657, 717, 1197, 1387, 1533, 1673, 2151, 4161, 4541, 4599, 5019, 9709, 12483, 13623, 15057, 17447, 29127, 31787, 40869, 52341, 87381, 95361, 122129, 157023, 286083, 331493, 366387, 994479, 1099161, 2320451, 2983437, 6961353, 20884059]

約数ペア:

[(1, 20884059), (3, 6961353), (7, 2983437), (9, 2320451), (19, 1099161), (21, 994479), (57, 366387), (63, 331493), (73, 286083), (133, 157023), (171, 122129), (219, 95361), (239, 87381), (399, 52341), (511, 40869), (657, 31787), (717, 29127), (1197, 17447), (1387, 15057), (1533, 13623), (1673, 12483), (2151, 9709), (4161, 5019), (4541, 4599)]