21386728

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{243031}}^1$

素因数の和:243048

約数の個数: 16

約数和(自身を含む): 43745760

約数和(自身を除く): 22359032

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 243031, 486062, 972124, 1944248, 2673341, 5346682, 10693364, 21386728]

約数ペア:

[(1, 21386728), (2, 10693364), (4, 5346682), (8, 2673341), (11, 1944248), (22, 972124), (44, 486062), (88, 243031)]