21489572

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{13331}}^1$

素因数の和:13379

約数の個数: 24

約数和(自身を含む): 41809152

約数和(自身を除く): 20319580

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 403, 806, 1612, 13331, 26662, 53324, 173303, 346606, 413261, 693212, 826522, 1653044, 5372393, 10744786, 21489572]

約数ペア:

[(1, 21489572), (2, 10744786), (4, 5372393), (13, 1653044), (26, 826522), (31, 693212), (52, 413261), (62, 346606), (124, 173303), (403, 53324), (806, 26662), (1612, 13331)]