19183220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{263}}^1\times {\mathrm{521}}^1$

素因数の和:800

約数の個数: 48

約数和(自身を含む): 46303488

約数和(自身を除く): 27120268

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 263, 521, 526, 1042, 1052, 1315, 1841, 2084, 2605, 2630, 3647, 3682, 5210, 5260, 7294, 7364, 9205, 10420, 14588, 18235, 18410, 36470, 36820, 72940, 137023, 274046, 548092, 685115, 959161, 1370230, 1918322, 2740460, 3836644, 4795805, 9591610, 19183220]

約数ペア:

[(1, 19183220), (2, 9591610), (4, 4795805), (5, 3836644), (7, 2740460), (10, 1918322), (14, 1370230), (20, 959161), (28, 685115), (35, 548092), (70, 274046), (140, 137023), (263, 72940), (521, 36820), (526, 36470), (1042, 18410), (1052, 18235), (1315, 14588), (1841, 10420), (2084, 9205), (2605, 7364), (2630, 7294), (3647, 5260), (3682, 5210)]