68027820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{161971}}^1$

素因数の和:161990

約数の個数: 48

約数和(自身を含む): 217690368

約数和(自身を除く): 149662548

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 161971, 323942, 485913, 647884, 809855, 971826, 1133797, 1619710, 1943652, 2267594, 2429565, 3239420, 3401391, 4535188, 4859130, 5668985, 6802782, 9718260, 11337970, 13605564, 17006955, 22675940, 34013910, 68027820]

約数ペア:

[(1, 68027820), (2, 34013910), (3, 22675940), (4, 17006955), (5, 13605564), (6, 11337970), (7, 9718260), (10, 6802782), (12, 5668985), (14, 4859130), (15, 4535188), (20, 3401391), (21, 3239420), (28, 2429565), (30, 2267594), (35, 1943652), (42, 1619710), (60, 1133797), (70, 971826), (84, 809855), (105, 647884), (140, 485913), (210, 323942), (420, 161971)]