279708219

素因数分解:

$3^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{21871}}^1$

素因数の和:21920

約数の個数: 36

約数和(自身を含む): 486214560

約数和(自身を除く): 206506341

約数列:

[1, 3, 7, 9, 21, 29, 49, 63, 87, 147, 203, 261, 441, 609, 1421, 1827, 4263, 12789, 21871, 65613, 153097, 196839, 459291, 634259, 1071679, 1377873, 1902777, 3215037, 4439813, 5708331, 9645111, 13319439, 31078691, 39958317, 93236073, 279708219]

約数ペア:

[(1, 279708219), (3, 93236073), (7, 39958317), (9, 31078691), (21, 13319439), (29, 9645111), (49, 5708331), (63, 4439813), (87, 3215037), (147, 1902777), (203, 1377873), (261, 1071679), (441, 634259), (609, 459291), (1421, 196839), (1827, 153097), (4263, 65613), (12789, 21871)]