21083379

素因数分解:

$3^1\times {\mathrm{31}}^2\times {\mathrm{71}}^1\times {\mathrm{103}}^1$

素因数の和:239

約数の個数: 24

約数和(自身を含む): 29742336

約数和(自身を除く): 8658957

約数列:

[1, 3, 31, 71, 93, 103, 213, 309, 961, 2201, 2883, 3193, 6603, 7313, 9579, 21939, 68231, 98983, 204693, 226703, 296949, 680109, 7027793, 21083379]

約数ペア:

[(1, 21083379), (3, 7027793), (31, 680109), (71, 296949), (93, 226703), (103, 204693), (213, 98983), (309, 68231), (961, 21939), (2201, 9579), (2883, 7313), (3193, 6603)]