28390719

素因数分解:

$3^1\times 7^1\times {\mathrm{449}}^1\times {\mathrm{3011}}^1$

素因数の和:3470

約数の個数: 16

約数和(自身を含む): 43372800

約数和(自身を除く): 14982081

約数列:

[1, 3, 7, 21, 449, 1347, 3011, 3143, 9033, 9429, 21077, 63231, 1351939, 4055817, 9463573, 28390719]

約数ペア:

[(1, 28390719), (3, 9463573), (7, 4055817), (21, 1351939), (449, 63231), (1347, 21077), (3011, 9429), (3143, 9033)]