21701911

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{281}}^1$

素因数の和:375

約数の個数: 32

約数和(自身を含む): 29237760

約数和(自身を除く): 7535849

約数列:

[1, 7, 11, 17, 59, 77, 119, 187, 281, 413, 649, 1003, 1309, 1967, 3091, 4543, 4777, 7021, 11033, 16579, 21637, 33439, 52547, 77231, 116053, 182369, 281843, 367829, 1276583, 1972901, 3100273, 21701911]

約数ペア:

[(1, 21701911), (7, 3100273), (11, 1972901), (17, 1276583), (59, 367829), (77, 281843), (119, 182369), (187, 116053), (281, 77231), (413, 52547), (649, 33439), (1003, 21637), (1309, 16579), (1967, 11033), (3091, 7021), (4543, 4777)]