21039123

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{179}}^1\times {\mathrm{193}}^1$

素因数の和:411

約数の個数: 32

約数和(自身を含む): 33523200

約数和(自身を除く): 12484077

約数列:

[1, 3, 7, 21, 29, 87, 179, 193, 203, 537, 579, 609, 1253, 1351, 3759, 4053, 5191, 5597, 15573, 16791, 34547, 36337, 39179, 103641, 109011, 117537, 241829, 725487, 1001863, 3005589, 7013041, 21039123]

約数ペア:

[(1, 21039123), (3, 7013041), (7, 3005589), (21, 1001863), (29, 725487), (87, 241829), (179, 117537), (193, 109011), (203, 103641), (537, 39179), (579, 36337), (609, 34547), (1253, 16791), (1351, 15573), (3759, 5597), (4053, 5191)]