201809979

素因数分解:

$3^2\times 7^2\times {\mathrm{443}}^1\times {\mathrm{1033}}^1$

素因数の和:1496

約数の個数: 36

約数和(自身を含む): 340190136

約数和(自身を除く): 138380157

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 443, 1033, 1329, 3099, 3101, 3987, 7231, 9297, 9303, 21693, 21707, 27909, 50617, 65079, 65121, 151851, 195363, 455553, 457619, 1372857, 3203333, 4118571, 9609999, 22423331, 28829997, 67269993, 201809979]

約数ペア:

[(1, 201809979), (3, 67269993), (7, 28829997), (9, 22423331), (21, 9609999), (49, 4118571), (63, 3203333), (147, 1372857), (441, 457619), (443, 455553), (1033, 195363), (1329, 151851), (3099, 65121), (3101, 65079), (3987, 50617), (7231, 27909), (9297, 21707), (9303, 21693)]