28279293

素因数分解:

$3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{101}}^1\times {\mathrm{199}}^1$

素因数の和:377

約数の個数: 32

約数和(自身を含む): 44390400

約数和(自身を除く): 16111107

約数列:

[1, 3, 7, 21, 67, 101, 199, 201, 303, 469, 597, 707, 1393, 1407, 2121, 4179, 6767, 13333, 20099, 20301, 39999, 47369, 60297, 93331, 140693, 142107, 279993, 422079, 1346633, 4039899, 9426431, 28279293]

約数ペア:

[(1, 28279293), (3, 9426431), (7, 4039899), (21, 1346633), (67, 422079), (101, 279993), (199, 142107), (201, 140693), (303, 93331), (469, 60297), (597, 47369), (707, 39999), (1393, 20301), (1407, 20099), (2121, 13333), (4179, 6767)]