19991643

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1931}}^1$

素因数の和:1987

約数の個数: 32

約数和(自身を含む): 33384960

約数和(自身を除く): 13393317

約数列:

[1, 3, 7, 17, 21, 29, 51, 87, 119, 203, 357, 493, 609, 1479, 1931, 3451, 5793, 10353, 13517, 32827, 40551, 55999, 98481, 167997, 229789, 391993, 689367, 951983, 1175979, 2855949, 6663881, 19991643]

約数ペア:

[(1, 19991643), (3, 6663881), (7, 2855949), (17, 1175979), (21, 951983), (29, 689367), (51, 391993), (87, 229789), (119, 167997), (203, 98481), (357, 55999), (493, 40551), (609, 32827), (1479, 13517), (1931, 10353), (3451, 5793)]