28839279

素因数分解:

$3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1\times {\mathrm{199}}^1$

素因数の和:379

約数の個数: 32

約数和(自身を含む): 45260800

約数和(自身を除く): 16421521

約数列:

[1, 3, 7, 21, 67, 103, 199, 201, 309, 469, 597, 721, 1393, 1407, 2163, 4179, 6901, 13333, 20497, 20703, 39999, 48307, 61491, 93331, 143479, 144921, 279993, 430437, 1373299, 4119897, 9613093, 28839279]

約数ペア:

[(1, 28839279), (3, 9613093), (7, 4119897), (21, 1373299), (67, 430437), (103, 279993), (199, 144921), (201, 143479), (309, 93331), (469, 61491), (597, 48307), (721, 39999), (1393, 20703), (1407, 20497), (2163, 13333), (4179, 6901)]