20947563

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{25577}}^1$

素因数の和:25603

約数の個数: 24

約数和(自身を含む): 37241568

約数和(自身を除く): 16294005

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 25577, 76731, 179039, 230193, 332501, 537117, 997503, 1611351, 2327507, 2992509, 6982521, 20947563]

約数ペア:

[(1, 20947563), (3, 6982521), (7, 2992509), (9, 2327507), (13, 1611351), (21, 997503), (39, 537117), (63, 332501), (91, 230193), (117, 179039), (273, 76731), (819, 25577)]