20489805

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{2243}}^1$

素因数の和:2290

約数の個数: 48

約数和(自身を含む): 42007680

約数和(自身を除く): 21517875

約数列:

[1, 3, 5, 7, 9, 15, 21, 29, 35, 45, 63, 87, 105, 145, 203, 261, 315, 435, 609, 1015, 1305, 1827, 2243, 3045, 6729, 9135, 11215, 15701, 20187, 33645, 47103, 65047, 78505, 100935, 141309, 195141, 235515, 325235, 455329, 585423, 706545, 975705, 1365987, 2276645, 2927115, 4097961, 6829935, 20489805]

約数ペア:

[(1, 20489805), (3, 6829935), (5, 4097961), (7, 2927115), (9, 2276645), (15, 1365987), (21, 975705), (29, 706545), (35, 585423), (45, 455329), (63, 325235), (87, 235515), (105, 195141), (145, 141309), (203, 100935), (261, 78505), (315, 65047), (435, 47103), (609, 33645), (1015, 20187), (1305, 15701), (1827, 11215), (2243, 9135), (3045, 6729)]