20916903

素因数分解:

$3^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{5503}}^1$

素因数の和:5694

約数の個数: 16

約数和(自身を含む): 32055296

約数和(自身を除く): 11138393

約数列:

[1, 3, 7, 21, 181, 543, 1267, 3801, 5503, 16509, 38521, 115563, 996043, 2988129, 6972301, 20916903]

約数ペア:

[(1, 20916903), (3, 6972301), (7, 2988129), (21, 996043), (181, 115563), (543, 38521), (1267, 16509), (3801, 5503)]