28107639

素因数分解:

$3^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{6659}}^1$

素因数の和:6739

約数の個数: 24

約数和(自身を含む): 47099520

約数和(自身を除く): 18991881

約数列:

[1, 3, 7, 9, 21, 63, 67, 201, 469, 603, 1407, 4221, 6659, 19977, 46613, 59931, 139839, 419517, 446153, 1338459, 3123071, 4015377, 9369213, 28107639]

約数ペア:

[(1, 28107639), (3, 9369213), (7, 4015377), (9, 3123071), (21, 1338459), (63, 446153), (67, 419517), (201, 139839), (469, 59931), (603, 46613), (1407, 19977), (4221, 6659)]