21816839

素因数分解:

${\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{467}}^1$

素因数の和:646

約数の個数: 16

約数和(自身を含む): 24800256

約数和(自身を除く): 2983417

約数列:

[1, 11, 31, 137, 341, 467, 1507, 4247, 5137, 14477, 46717, 63979, 159247, 703769, 1983349, 21816839]

約数ペア:

[(1, 21816839), (11, 1983349), (31, 703769), (137, 159247), (341, 63979), (467, 46717), (1507, 14477), (4247, 5137)]